Family
ClaimDetailEvidence
FatherAlexander Forsyth (~1747-1829) [S137] [S1910] [S3242] [N103]
dna
MotherRachel Lindsay (~1750-1840) [S137] [S3242] [N103]
dna
Spouse 1stFrances Brown (e1767-<1803) 
Child +Oliver A. Forsyth (~1796-<1834) [S136]
dna
Attributes
ClaimDetailEvidence
GenderMale
NameMajor Isaac Forsyth
negative
NameIsaac Forsyth [S137] [S164] [S166] [S881:726] [S1062] [S1124:64] [S1125] [S1130] [S1144] [S1164] [S1165] [S1198] [S1200] [S1791] [S1864:46] [S1910] [S1924] [S1925] [N103]
primary
NameIsaac Forsythe [S165] [S1763:239] [S1764:98] [S1765:30] [S1766:14] [S1925]
primary
NameIsaac Forscyth [S1763:304]
primary
NameIsaa Forsythe [S1766:127]
primary
NameGrandfather Forsythe [S161]
memoir
FatherAlexander Forsyth (~1747-1829) [S137] [S1910] [S3242] [N103]
dna
MotherRachel Lindsay (~1750-1840) [S137] [S3242] [N103]
dna
Timeline
ClaimDateDetailAgeEvidence
Birthabt 1766 [S136] [S525]
A. S. Forsyth (1889): "always understood the family was originally from the North of Ireland."
According to the 1790 census, he was born before 1774. The 1800 census puts his birth between 1756 and 1744 and the 1810 census puts his birth before 1766. This would imply his parents were married about 1765
primary
Census (US Federal)Feb 25, 1790Baltimore, Baltimore, Maryland, United States [S531] [N103] (Counted)
primary
Marriage 1stDec 22, 1792Frances Brown (e1767-<1803), First Presbyterian Church, Baltimore, Baltimore, Maryland, United States [S164] [S1062] [S1124:64] [N103]
secondary
Residence1793Heidelberg Township, York, Pennsylvania, United States [S1924]
primary
Occupation 1793 to 1800drover [S1924]
primary
FlourishedSep 1796York, Pennsylvania, United States [S1198]
charged along with Jacob Forsyth for Assault and Battery
primary
FlourishedJul 17, 1798Heidelberg Township, York, Pennsylvania, United States [S1200]
bought 2 parcels of land from the estate of Richard McAlister
primary
Tax ListOct 1, 1798Manheim Township, York, Pennsylvania, United States [S1925]
10 acres worth 80 dollars
primary
Tax ListOct 1, 1798Hanover, York, Pennsylvania, United States [S1925]
10 acres worth 260 dollars
primary
MilitaryFeb 15, 1799Hanover, York, Pennsylvania, United States [S881:719]
listed as a "Cornet" in the Hanover Troop of Horse regiment
secondary
Residence1800Heidelberg Township, York, Pennsylvania, United States [S1924]
primary
FlourishedMar 1800York, York, Pennsylvania, United States [S1198]
was appointed to the Grand Jury
primary
Census (US Federal)Aug 4, 1800Heidelberg Township, York, Pennsylvania, United States [S528] [N103] (Named)
primary
Flourished1801Heidelberg Township, York, Pennsylvania, United States [S1130]
taxed for 12 acres as a single man
secondary
FlourishedApr 20, 1802Manheim Township, York, Pennsylvania, United States [S1165]
bought land from Philip and Susanna Pattefield
secondary
FlourishedFeb 15, 1803Manheim Township, York, Pennsylvania, United States [S1165]
sold land to John Stroman, Esq.
secondary
FlourishedSep 8, 1803Hanover, York, Pennsylvania, United States [S1199]
he and his wife transferred the deed of their property on Baltimore Street in Hanover to their brother-in-law Josias Thompson to satisfy a debt of $425 to Hillary Thompson
primary
FlourishedFeb 20, 1804Hanover, York, Pennsylvania, United States [S1196]
along with his wife Ann, deed land to his brother-in-law Josias Thompson to pay off a debt [York County Deeds, Vol. 2 R p 81]
secondary
FlourishedNov 22, 1804Heidelberg Township, York, Pennsylvania, United States [S1195]
purchased 2 lots of land from the estate of Richard McAllister [York County Deeds Vol. 14 N p 352]
secondary
Moved1805Paris, Bourbon, Kentucky, United States [S136] [S1125]
winter of 1805/6
secondary
FlourishedApr 1807Bourbon, Kentucky, United States [S1763:239]
bought 2 calves, 25 geese and 2 wheat vittles at the estate sale of Daniel Call
primary
FlourishedOct 1807Bourbon, Kentucky, United States [S1763:304]
bought a horse at the estate sale of Jacob See
primary
FlourishedJun 1808Bourbon, Kentucky, United States [S1763:546]
bought a hay stack at the estate sale of Thomas Parker
primary
FlourishedJul 26, 1810Bourbon, Kentucky, United States [S1764:98]
bought a cow and calf at the estate sale of Samuel Clay
primary
Census (US Federal)Aug 6, 1810Stoner, Bourbon, Kentucky, United States [S525] [N103] (Named)
primary
Flourished1811Bourbon, Kentucky, United States [S1125]
being a man of bad habits, and having caused some fears, that he might go through his estate, and leave his family in want, executed to Caleb Litton, his brother-in-law, a conveyance of sundry slaves and personal estate, in trust for the exclusive use of his wife and children
secondary
FlourishedJan 26, 1814Bourbon, Kentucky, United States [S1765:124]
bought a fat black steer at the estate sale of Daniel Ayres
primary
FlourishedMar 24, 1814Bourbon, Kentucky, United States [S1765:30]
bought a bed at the estate sale of Robert Hall
primary
FlourishedAug 15, 1814Bourbon, Kentucky, United States [S1765:172]
bought 3 old saddles at the estate sale of Samuel Dillon
primary
FlourishedOct 28, 1816Bourbon, Kentucky, United States [S1766:14]
bought a cart at the estate sale of Jonathan Musick
primary
FlourishedOct 1817Bourbon, Kentucky, United States [S1766:72]
bought the corn at the estate sale of Adam Woods
primary
FlourishedOct 25, 1818Bourbon, Kentucky, United States [S1766:127]
bought a trundle bed at the estate sale of Charles Yetton
primary
Census (US Federal)Aug 7, 1820North Middleton, Bourbon, Kentucky, United States [S520] (Named)
primary
ResidenceSep 1822Bourbon, Kentucky, United States [S1864:46]
bought six sheep from the estate of Henry Man
primary
ResidenceSep 1824Bourbon, Kentucky, United States [S1864:220]
bought five sheep from the estate of Charles Soper (his father-in-law Michael Letton also bought property)
primary
FlourishedApr 21, 1828Bourbon, Kentucky, United States [S1125]
lost his suit in the Court of Appeals by his daughter Evelina concerning the sale of a slave given to Evelina when an infant
secondary
Sources
IndexTitle
[S136] "Letter from A. S. Forsyth to Miss Carrie Brown, Louisville, KY".
[S137] "Letter from Thomas Hitselberger to Avalena (Forsyth) Brown, March 19, 1923".
[S161] "Letter from Avalena (Forsyth) Brown to Mason Forsyth".
[S164] Barnes, Robert, "Maryland Marriages, 1778-1800" (Baltimore 1978 (Genealogical Publishing Co., Inc., 1993)) (https://www.ancestry.com/search/collections/48201/).
[S165] Barnes, Robert, "Maryland Marriages, 1801-1820" (Genealogical Publishing Co., Inc., 1993) (https://www.ancestry.com/search/collections/48202/).
[S166] Compiled and Edited by: Marlene Strawser Bates and F. Edward Wright, "York County, Pennsylvania - Church Records of the 18th Century" (Maryland Historical Society. 1991, York Co. PA, Ref. - F-157 Y6B329C).
[S520] "1820 United States Census, Kentucky, Bourbon, North Middleton".
[S525] "1810 United States Census, Kentucky, Bourbon, Stoner".
[S528] "1800 United States Census, Pennsylvania, York, Heidelberg".
[S531] "1790 United States Census, Maryland, Baltimore, Baltimore Town".
[S881] "Pennsylvania Archives, Sixth Series, Vol. IV: Military Abstracts From Executive Minutes, 1790-1817" (Harrisburg Pub. Co., State Printer, 1907 (1852)) (http://www.archive.org/details/6thpennsylvaniaarch04harruoft).
[S1062] "Maryland Marriages, 1655-1850".
[S1124] Dawn Beitler Smith, "Baltimore County, Maryland Marriage Licenses, 1777-1798" (1989) (http://books.google.com/books?id=QvimmBMhoUUC).
[S1125] Thomas B. Monroe, "Reports of Cases at Common Law and in Equity, Court of Appeals, Commonwealth of Kentucky, Vol. VII" (1830) (http://books.google.com/books?id=HD8EAAAAYAAJ).
[S1130] "1801 tax list for single men: Manheim Township, York Pennsylvania" (http://freepages.genealogy.rootsweb.ancestry.com/~peppler/maryland/york_1801.html).
[S1144] "York County, Pennsylvania Church Records to 1800".
[S1164] "Birth and Baptismal Records of Emanuel Reformed Church, 1794-1813, Hanover, York County, PA" (2005) (http://files.usgwarchives.net/pa/york/church/records/emanuel-reformed2.txt).
[S1165] "Land Sale: Frederick Wentz & ux. to Christina Koutz - 1818" (http://freepages.genealogy.rootsweb.ancestry.com/~peppler/maryland/wentzdeeds.html).
[S1195] "York County, PA - Grantee Index 'F' (1742-1912)".
[S1196] "York County, PA - Grantor Index 'F' (1742-1912)".
[S1198] "York County Clerk of Courts Quarter Session Dockets (1749-1877) Part 2" (http://www.yorkcountyarchives.org/search.asp).
[S1199] "York County Deeds, Grantor".
[S1200] "York County Deeds, Grantee".
[S1763] "Bourbon County, Kentucky Probate Records, Will Book C (1805-1809)", Family Search.
[S1764] "Bourbon County, Kentucky Probate Records, Will Book D (1809-1814)", Family Search.
[S1765] "Bourbon County, Kentucky Probate Records, Will Book E (1814-1816)", Family Search.
[S1766] "Bourbon County, Kentucky Probate Records, Will Book F (1816-1821)", Family Search.
[S1791] "Maryland Births and Christenings Index, 1662-1911", Ancestry.com (http://search.ancestry.com/search/db.aspx?dbid=2565).
[S1864] "Bourbon County, Kentucky Probate Records, Will Book G (1821-1827)", Family Search.
[S1910] "Probate Records: Alexander Forsyth" (Maryland, Register of Wills Books, 1629-1983, Baltimore City Will Book, Volume 13, pages 211-212, Microfilm Box # CR 95 15-3, Maryland State Archives).
[S1924] "Pennsylvania Septennial Census, 1779-1863" (Provo, UT, USA: Ancestry.com Operations, Inc., 2012.), Ancestry.com (https://www.ancestry.com/search/collections/2702/).
[S1925] "Pennsylvania U.S. Direct Tax Lists, 1798" (Provo, UT, USA: Ancestry.com Operations, Inc., 2012), Ancestry.com.
[S3242] "FamilyTreeDNA Y-DNA".
[N103] Tim Forsythe, "The Alexander Forsyth Family", 2009, online article , Papa Greybeard, Greybeard's Ghosts, (https://timforsythe.com/greybeard/blog/the-alexander-forsyth-family, accessed: August 3, 2024).
[N128] Tim Forsythe, "Alexander Forsyth", June 27, 2024, online article , Papa Greybeard, Greybeard's Ghosts, (https://timforsythe.com/greybeard/blog/alexander-forsyth, accessed: February 20, 2025).
Note
Bourbon County, Kentucky, Will Book E (1814-1816)

pg 54
Mar 15, 1814 - John Swiney Sales
Michael Letton
Cornelius Rayburn
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-4396-53?cc=1875188&wc=11533418

Bourbon County, Kentucky Will Book D (1809-1814)

Page 183-184
Michael Letton
Cornelius Rayburn
https://familysearch.org/pal:/MM9.3.1/TH-1951-20775-2045-24?cc=1875188&wc=11533473

Page 185
John Raybourn
Michel Letton
Cornelius Raybourn
https://familysearch.org/pal:/MM9.3.1/TH-1951-20775-2045-24?cc=1875188&wc=11533473

Bourbon County, Kentucky, Will Book H (1827-1831)

I briefly scanned Bourbon County Will Book H for ancestors and collateral families. It is possible that I missed some.

pg 485-486
Jun 24, 1831 - William Hutchinson's Will
Wayne T'hs Forsythe witness
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-51147-33?cc=1875188&wc=11533436

Bourbon County, Kentucky, Will Book J (1831-1834)

I scanned through image 144 (Oct 1833) out of 324 images of Will Book J, and found no trace of my ancestors. It seems pretty clear they high-tailed it out of Kentucky (around 1830) after John Layson died (1829).

The following persons were found. The numbers are image numbers, not page numbers

https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20811-18908-72?cc=1875188&wc=11533480

Thompson Forsythe i 54-55 (Sep 5, 1832)

Bourbon County, Kentucky Will Book G (1821-1827)

I briefly scanned Bourbon County Will Book G for ancestors and collateral families. It is possible that I missed some.

May 1826 - Jacob Spears Account of Sales
property bought by Augustus/Gustuvus Forsythe
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-50945-49?cc=1875188&wc=11533431

Bourbon County, Kentucky, Will Book H (1827-1831)

I briefly scanned Bourbon County Will Book H for ancestors and collateral families. It is possible that I missed some.

pg 147-150
Nov 3, 1928 - Jacob Coil Sales
property bought by Augustus Forsythe
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-52673-44?cc=1875188&wc=11533436

Bourbon County, Kentucky, Will Book B (1795-1805)

pg 100-102
Jan 1, 1800
Michael Litton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20804-17662-81?cc=1875188&wc=11533411

Michael Letton is Isaac Forsyth's father-in-law. Isaac Forsyth married Ann Letton in Maryland in 1803 and moved from Pennsylvania to Kentucky in 1805.

Bourbon County, Kentucky Will Book C (1805-1809)

Page 1
Apr 1805, Sales of William McClelland
Mikel Litone
https://familysearch.org/pal:/MM9.3.1/TH-1942-20775-2134-23?cc=1875188&wc=11533462

Page 304-309
Oct 1807 Jacob See Sale
Michael Litton
Isaac Forsyth (ancestor)
https://familysearch.org/pal:/MM9.3.1/TH-1942-20775-2083-3?cc=1875188&wc=11533462

Page 399
Michel Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20775-1974-72?cc=1875188&wc=11533462

Pg 546-551
Jun 1808 - Thomas Parker Sales
Isaac Forsythe (ancestor)
Michel Litton
https://familysearch.org/pal:/MM9.3.1/TH-1942-20775-2093-99?cc=1875188&wc=11533462

Michael Letton was Isaac Forsyth's father-in-law

Bourbon County, Kentucky Will Book D (1809-1814)

Page 2-6
Michael Litton
https://familysearch.org/pal:/MM9.3.1/TH-1942-20775-2081-97?cc=1875188&wc=11533473

Page 13-16
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1942-20775-2104-43?cc=1875188&wc=11533473

Page 143
Michael Letton note
https://familysearch.org/pal:/MM9.3.1/TH-1951-20775-2024-39?cc=1875188&wc=11533473

Page 157-158
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20776-4-93?cc=1875188&wc=11533473

Page 160-161
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20775-2035-22?cc=1875188&wc=11533473

Page 183-184
Michael Letton
Cornelius Rayburn
https://familysearch.org/pal:/MM9.3.1/TH-1951-20775-2045-24?cc=1875188&wc=11533473

Page 185
John Raybourn
Michel Letton
Cornelius Raybourn
https://familysearch.org/pal:/MM9.3.1/TH-1951-20775-2045-24?cc=1875188&wc=11533473

Page 213
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20775-2040-43?cc=1875188&wc=11533473

Page 297-298
Michael Lyten
https://familysearch.org/pal:/MM9.3.1/TH-1942-20775-1930-9?cc=1875188&wc=11533473

Page 484
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1942-20775-2010-12?cc=1875188&wc=11533473

Michael Litton was the father-in-law of Isaac Forsyth
Cornelius Rayburn was the son-in-law of Isaac Forsyth

Bourbon County, Kentucky, Will Book E (1814-1816)

pg 43-45
Apr 13, 1814 - John Swiney Sales
Michael Letton
Caleb Letton
John Forsythe
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-4467-57?cc=1875188&wc=11533418
https://familysearch.org/pal:/MM9.3.1/TH-1942-20787-4346-64?cc=1875188&wc=11533418

pg 54
Mar 15, 1814 - John Swiney Sales
Michael Letton
Cornelius Rayburn
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-4396-53?cc=1875188&wc=11533418

pg 78-79
May, 14, 1814 - Thomas Sledd Sales
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-4158-65?cc=1875188&wc=11533418

pg 83-85
May, 11, 1814 - Sherwood Crump Sales
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1942-20787-4194-70?cc=1875188&wc=11533418

Page 200-206
Hezekiah Martin
Cornelius Claypool
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1942-20787-3545-65?cc=1875188&wc=11533418

Page 253
Michael Letton
Hezekiah Martin
https://familysearch.org/pal:/MM9.3.1/TH-1942-20787-3537-71?cc=1875188&wc=11533418

Page 257
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1942-20787-3432-91?cc=1875188&wc=11533418

Page 262
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-3439-65?cc=1875188&wc=11533418

Page 338
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-3338-77?cc=1875188&wc=11533418

Page 355
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-3217-93?cc=1875188&wc=11533418

Page 388
15 Jan 1816 - Richard B. Smith's Will
Letton Smith - son
Michael Letton witness
https://familysearch.org/pal:/MM9.3.1/TH-1942-20787-3054-93?cc=1875188&wc=11533418

Page 405
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-3112-9?cc=1875188&wc=11533418

Page 406-408
Michael Letton
Caleb Letton
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-3112-9?cc=1875188&wc=11533418

This is a completely unrelated item, but it is interesting to see a detailed inventory of a doctor in the early 1800s.

Page 434-437
Sales of Dr. David Todd
Ralph Litton
John G. Martin
https://familysearch.org/pal:/MM9.3.1/TH-1951-20787-3038-92?cc=1875188&wc=11533418

Page 461
Michael Letton
https://familysearch.org/pal:/MM9.3.1/TH-1942-20787-2865-54?cc=1875188&wc=11533418

Michael Letton was the father-in-law of Isaac Forsyth, Caleb Letton was his son.
Cornelius Rayburn was the son-in-law of Isaac Forsyth
It is not known how Ralph Litton is related to Michael Letton

Bourbon County, Kentucky Will Book F (1816-1821)

I briefly scanned Bourbon County Will Book F for ancestors and collateral families. It is possible that I missed some.

Oct 27, 1816 - Jonathan Musick Account of Sales
property bought by Isaac Forsythe (ancestor) and Michael Letton
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20787-3055-93?cc=1875188&wc=11533423
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20787-2913-66?cc=1875188&wc=11533423

Oct 1817 - Adam Woods Account of Sales
property bought by Isaac Forsythe (ancestor), Benjamin Forsythe, Michael Letton, and Stephen Owings
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20787-2778-76?cc=1875188&wc=11533423
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20787-2760-67?cc=1875188&wc=11533423

Bourbon County, Kentucky Will Book G (1821-1827)

I briefly scanned Bourbon County Will Book G for ancestors and collateral families. It is possible that I missed some.

Nov 1, 1823 - Benjamin Mills Senr Account of Sales
property bought by Michael Letton, Fielden Letton and Caleb Letton (executor)
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20785-53209-39?cc=1875188&wc=11533431

Sep 1824, Charles Loper/Soper Account of Sales
property bought by Isaac Forsythe and Michael Letton
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-51570-26?cc=1875188&wc=11533431
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-51570-26?cc=1875188&wc=11533431

Oct 1825 - Thomas Damdle? senr Account of Sales
property bought by Michael Letton and Fielding Letton
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-51039-76?cc=1875188&wc=11533431

Nov 1826 - Malcom Wood Inventory
Caleb Letton (commissioner)
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-53242-27?cc=1875188&wc=11533431

Michael Letton was the father-in-law of Isaac Forsyth, Caleb Letton was his son.

Bourbon County, Kentucky, Will Book H (1827-1831)

I briefly scanned Bourbon County Will Book H for ancestors and collateral families. It is possible that I missed some.

pg 291
Oct 1, 1829 - Tanner Neal Inventory
Caleb Litton appraiser
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-52158-30?cc=1875188&wc=11533436

pg 384-385
182906029 - Avelina Forsyth Will
Ann Forsythe mother <------------
Caleb Letton uncle
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20785-52633-31?cc=1875188&wc=11533436

pg 497
Sep 5, 1831 - Avelina Forsythe inventory
Caleb Lettton executor
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20785-52079-27?cc=1875188&wc=11533436

Caleb Letton was Nancy's brother

Bourbon County, Kentucky Will Book F (1816-1821)

I briefly scanned Bourbon County Will Book F for ancestors and collateral families. It is possible that I missed some.

Oct 25, 1817 - Charles Yetton Account of Sales
property bought by Isaac Forsythe (ancestor), John Layson (ancestor), Robert Layson, Issac Layson, David Pond, Stephen Owings and Michael Letton
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20787-2705-69?cc=1875188&wc=11533423
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20787-2713-68?cc=1875188&wc=11533423
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20787-2633-68?cc=1875188&wc=11533423

Bourbon County, Kentucky Will Book F (1816-1821)

I briefly scanned Bourbon County Will Book F for ancestors and collateral families. It is possible that I missed some.

Oct 1817 - Adam Woods Account of Sales
property bought by Isaac Forsythe (ancestor), Benjamin Forsythe, Michael Letton, and Stephen Owings
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20787-2778-76?cc=1875188&wc=11533423
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20787-2760-67?cc=1875188&wc=11533423

Oct 25, 1817 - Charles Yetton Account of Sales
property bought by Isaac Forsythe (ancestor), John Layson (ancestor), Robert Layson, Issac Layson, David Pond, Stephen Owings and Michael Letton
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20787-2705-69?cc=1875188&wc=11533423
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20787-2713-68?cc=1875188&wc=11533423
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20787-2633-68?cc=1875188&wc=11533423

Nov 20, 1818 - Robert Layson Account of Sales
property bought by John Layson (ancestor), Stephen Owings, David Pond, and H[ezekiah] Martin
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20787-2793-52?cc=1875188&wc=11533423
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20787-2548-64?cc=1875188&wc=11533423

Bourbon County, Kentucky, Will Book H (1827-1831)

I briefly scanned Bourbon County Will Book H for ancestors and collateral families. It is possible that I missed some.

pg 492-496
Jul 4, 1831 - Solomon Spears Sales
property bought by Denmark Forsythe
https://www.familysearch.org/pal:/MM9.3.1/TH-1951-20785-51100-48?cc=1875188&wc=11533436

Louisville, Kentucky

http://www.fold3.com/image/7/226439330/
1861
Forsyth, Denmark, teacher, 1007 W. Green

Bourbon County, Kentucky Will Book G (1821-1827)
I briefly scanned Bourbon County Will Book G for ancestors and collateral families. It is possible that I missed some.
Oct 1824 - Dr. Thomas Barber Additional Inventory
Jan 12, 1822 - Denmark Forsythe note
Feb 2, 1822 - Samuel Layson note
Jul 22, 1822 - Hezekiah Martin note
https://www.familysearch.org/pal:/MM9.3.1/TH-1942-20785-52508-25?cc=1875188&wc=11533431
Family Note
(Frances Brown) Isaac Forsyth was the eldest son of Alexander Forsyth and Rachel Lindsay. He was referred to as Major in a letter by a descendant, but this seems unlikely. Tradition also says he served George Washington and Lafayette. I have found sources mentioning an Isaac Forsyth from Philadelphia who was about a generation older who advanced in the military to Sergeant. It is possible that someone confused the two individuals. Our Isaac is only found as a Cornet in the Hanover Troop of Horse for a short period.
    According to the The 1810 census record for Bourbon County, Kentucky, Isaac was born before 1766. The 1800 census record for Heidelberg Township, York County, Pennsylvania lists Isaac as being born before 1775. It is known from her obituary, that his mother, Rachel Lindsay, was born about 1750/51. Rachel's father, David Lindsay, first appears in the records in Charles Town, Chester County, Pennsylvania in 1768. It is not until the following year that Isaac's father, Alexander Forsyth, is listed. Alexander Forsyth is listed as an inmate, indicating that he was married, but did not own land. Alexander and Rachel must have married perhaps around 1765 when she was very young leaving room for Isaac to have been born in late 1765 or early 1766.
    Isaac died between March 6, 1830 when he received payment from his father's estate, and October 3, 1831 when his father's will was probated (Isaac was not listed). There is no record of his death in Bourbon County, and he apparently died intestate (without a will). He married on December 22, 1792, at the First Presbyterian Church in Baltimore, Maryland to Francis Brown. They were married by Rev. Allison. Francis Brown died before June 19, 1803, when Isaac married a second time to Nancy Ann Letton in Prince George's Parish in Montgomery County, Maryland. Isaac bought property from Richard McAllister's estate in Hanover in 1804, so presumably Francis died in Hanover. There is no evidence that Isaac every lived in Baltimore.

Isaac and Francis had 4 children:

    Bethilda "Matilda" Forsyth (10 Apr 1792 - aft 1820) m. Cornelius Rayburn
    Augustus "Gustie" Forsyth (7 May 1794 - ) m. Frances Sparks
    Oliver Forsyth (abt 1796 - bet 1830 and 1 Apr 1838) m. Margaret Layson
    Denmark Forsyth (5 Sep 1800 - 16 Sep 1876) m. Abigail Brown

    Bethilda was born 9 months prior to her mother's marriage to Isaac. Some descendants have referred to Isaac's first wife as Francis Nut Brown. In the 1790 census of Baltimore, Isaac's father Alexander is found living 13 dwellings from head of household, Nut Brown, with a wife and 2 daughters.
    In the winter of 1805/06, Isaac and his second wife Ann moved to Paris, Bourbon County, Kentucky. He owned a farm in what is now Harrison County, Kentucky. Isaac was a farmer, trader, and woodcraftsman. They eventually settled in Jackstown on the Licking River with twelve children. Isaac is listed in the 1820 Kentucky Census in Bourbon County.
    Ann Letton, the daughter of Michael Letton, was born March 21, 1786, in Rockville, Maryland, and died May 3, 1876, in Jackstown, Kentucky. She is mentioned in Michael Letton's will (Montogomery Co. Will Book L pg 117). Micheal Letton left a slave "under guardianship of Isaac Forsythe" to Avelina in his will, probated in 1819. Michael Letton was also the bondsman of Bethilda when she married in 1816. Some source say that Ann Letton had been previously married and that the eldest two children are from that marriage, however, the oldest, Avelina, was born over a year after she married Isaac Forsyth, when Ann was just 22 years old, so that claim seems unlikely.

Isaac and Anne had 8 children were:

    Avoline Letton Forsyth (28 Aug 1804 - ) m. _____ Millirre
    Wayne Thompson Forsythe (1808 - 1880) m. Evalina Hutchinson
    Anne Gay "Angelina" Forsyth (20 Mar 1811 - 12 Dec 1876) m. 1828/32, Daniel Ashby Million
    Elvira W. Forsyth (5 Jun 1816 - 24 Dec 1888) m. 22 Nov 1837, Benjamin L. Hayth
    Viviani Ann Forsyth (19 June 1819 - abt 2 Apr 1888) m. Hamilton J. Hulcee
    January Hartt Forsythe (1821 - Dec 1874) m1. Patsey M. Baker, m2. 1863, Margaret A. Redmon
    Omelia Forsyth (abt 1823 - ) m1. 1 Sep 1835, Israel Lindley, m2. 22 Oct 1851, John Thomas Steffee
    Alexander Forsyth ( - after 29 June 1829)

A posting on the Internet from Helen Barricklow Endecott (1927-2005) on Ann Letton's daughter Avelina says:

"Avelina Le Forsythe's will dated 29 June 1829. She names her mother (name unreadable), her four sisters: Angalar, Amelia, Bioiami? & Elvird. Her Uncle Caleb Letton. Brothers, January & Alexander Forsythe. She obviously died young and unmarried. Her father is probably deceased since she had an estate which was probably her share from her father. Bourbon Co., Ky."

Since Isaac is not mentioned in her will, it may indicate that he had died prior to June 29, 1829.