Possible links:

St. Mary's, Cork city; County of Cork; Diocese of Cork and Ross. Baptisms, Nov. 1845 to Feb. 1846 - Micorfilm 94783-01, Page 221
http://registers.nli.ie/pages/vtls000633157_221
December 1845, 30, Edmund of Edm? Scully & Ellen Lynch, John Keefer and Ellen Sullivan [sponsors]

Ireland, Griffith’s Valuation, 1847-1864
Occupier: Edmund Scully & James Scully
Lessor: Edmund Barret & Michael Barrett
County: Cork
Barony: Muskerry, East
Parish: Inishcarra
Townland: Dromgownagh
OS Page Numbers: 72

It is unknown who Edmund Scully's parents were. He was born on May 6, 1842, in county Cork, Ireland. On March 18, 1911, he died of a strangulated hernia at his home of 888 S. Academy St. in Galesburg, Knox County, Illinois, and is buried there in St. Joseph's Cemetery.
Margaret Godsil was the daughter of William Patrick Godsel and Mary Reily. She was born and baptized on December 3, 1842, in the Parish of Aghada, near Dublin, Ireland. She died April 9, 1907 also at her home on 888 Abingdon Street, Galesburg, Knox County, Illinois. She is buried alongside her husband.
Edmund immigrated to this country on May 22, 1866 aboard the Virginia, and came to Galesburg, Knox County, Illinois. On the same vessel was Michael Godsil, the eldest brother of Margaret Godsil.
According to Patrick Henry Godsil's obituary, the brother of Margaret Godsil, their family immigrated to this country in 1864. According to the 1900 United States Census for Galesburg, Knox County, Illinois, she immigrated in 1868, however there is a marriage record in Galesburg between Edmond Scully and Margaret Gartchell in 1867, and their first child was born in 1868, so she must have immigrated earlier. There is record of Margaret Godsil immigrating on April 17, 1865 aboard the Kangaroo. Family history states that apparently Margaret's parents did not want Edmund to marry their daughter, but he followed her to America, and married her anyway.
Edmund Scully married Margaret Godsil on May 20, 1867, in St. Patrick's Church, Galesburg, Knox County, Illinois.

Edmund and Margaret had 10 children, all born in Galesburg, Knox County, Illlinois:

     Mary Elizabeth (11 May 1868 - 21 Jul 1913) m. Charles E. Wilson (30 Nov 1868 - 29 Jul 1921)
          Children:
               Mary Leona Wilson (21 Nov 1897 - 31 May 1961)
               John Howard Wilson (27 Dec 1898 - 1953)
     Ellen "Nell" Auretta (18 Sep 1869 - 27 Jan 1940) m. 3 Apr 1888, Galesburg, Knox, Illinois, Jackson "Jack" Lee Sipes (16 Feb 1862-1953)
          Children:
               Henry Edward Sipes (15 Oct 1889 - )
               Mary Margaret "Mattie" Sipes (15 Aug 1891 - ) m. Frederick E. Zindler
               George William Sipes (9 Oct 1893 - ) m. Edna _____
               Infant Sipes (abt 1895 - bef 1900)
     John Joseph (abt 1871 - bef 1883)
     Anna "Annie" (31 Dec 1872 - 24 Oct 1948) never married
     Margaret (21 Jan 1873 - 23 Apr 1954) m. William Marion Forsyth
          Children:
               William Henry Forsythe (25 Feb 1893 - 8 Jul 1974)
               Edna Margaret Forsyth (25 Feb 1895 - 22 Feb 1977)
               Mary Fay Forsyth (3 Jan 1902 - 31 Jan 1903)
     William Henry (1 Mar 1874 - 24 Jul 1945) m. 25 Jan 1899, Galesburg, Knox, Illinois, Josephine F. O'Brien (1880-1963)
          Children:
               William Thomas Scully (18 Jul 1899 - )
               Edward J. Scully (4 Jul 1901 - )
               George Scully (abt 1902 - bef 1906)
               Blanche J. Scully (9 Jan 1903 - )
               dau (abt 1904 - bet 1906 and 1910) [She appears in the The Scully Family Photo]
               Dale Francis Scully (23 Jan 1905 - aft 1925) - [left off of list of living grandchildren in Obituary: Margaret Godsil, 1907]
     Edward D. (11 Feb 1876 - 27 Feb 1901) never married
     James Phillip (16 Jan 1879 - 15 Aug 1958) m. 30 Apr 1903, San Bernardino, SB, CA, Antonia Julia Wetzel (11 Dec 1880 - 30 Jan 1968)
          Children:
               Helen Margaret Scully (18 Feb 1904, San Bernardino, CA - 2000)
               Robert James "Bob" Scully (3 Jan 1906, Taylor, TX - 9 Jul 1982)
     Catherine "Kate" Louise (7 Feb 1880 - 5 Jul 1949) m. 20 Jun 1906, John "Jack" Farrell (29 Jun 1876 - Sep 1959)
          Children:
               John Edward "Jack" Farrell (abt 1912-1954) m. Phyllis C. _____ (c. John M., Catherine L.)
               Margaret Mary Farrell (abt 1915 - )
               Robert James "Bob" Farrell (abt 1916 - )
               Phillip Francis Farrell (abt 1919 - )
               Anna Jean Farrell (17 Aug 1921 - 12 Jan 2014) m. 15 Oct 1941, Joseph Emmett Feeley (23 May 1922 - 6 Aug 1990)
               Daniel Farrell (abt 1925 - )
     John Joseph (3 Jan 1883 - 9 Aug 1929) never married (1907 - La Junta, CO, 1911 - El Paso, TX)
     Daniel T. "Dan" (25 Jul 1884 - 16 Aug 1948) m. Clara E. Cassidy

The family is found in the Federal Illinois Census of July 1870, in Galesburg, Knox, County, Illinois. Neither of their ages can be made clearly. They are next found in the 1880 Federal Illinois Census in the 5th Ward, Galesburg, Knox County, Illinois. They are both listed as age 35 which is suprising since they were both 2-3 years older. In the 1900 census, they are both listed as 54 years of age, but they were 3-4 years older. It is interesting that she listed his birthdate as unknown and her own incorrectly as 1845. She also listed her immigration date as 1868 when she was in Galesburg by at least 1867 and most likely immigrated in 1865. Lastly, the 1910 census lists his age as 64. Her birth year on her tombstone obviously incorrect since we have her baptism record.
There is some confusion over Edmund’s first name. It is listed variously as Edmund, Edmond in the "Illinois Statewide Marriage Index", Edward in the 1870, 1880, 1900, and 1910 censuses, and his wife's obituary. The ships log appears to be Edward, but may also be Edmund. His daughter's death certificate says Edwin, but was written by his grandson's wife. In any case, his gravestone says 'Edmund'.
There is also some confusion over the spelling of Margaret's last name. It is listed variously as Godsil and Godsell by her grandaughter Leona Wilson, and Gartchell in the "Illinois Statewide Warriage Index". The last spelling is obviously a gross error either in transcription, or in the county clerk’s recording of an Irish accent. The 'Godsell' spelling is not uncommon, and was written by her granddaughter, so cannot be discarded lightly.
Edmund was employed as a blacksmith for the Chicago Burlington & Quincy railroad in Galesburg, Knox County, Illinois, and the aforementioned censuses list him as a laborer.

Nick Hyslop through the Mallow Centre, located the family of John Scully and Elizabeth Pomphret of the Ballymacoda Parish in Diocese of Cloyne, county Cork, Ireland, but there is no evidence that he is the son listed: Their children were:
John (bp 16 Feb 1839)
Edmund (bp 30 Apr 1842)
Mary (bp 6 Sep 1844)
Catherine (bp 4 Jun 1847)

Here is a comment from Nick

"The Mallow Heritage has the Catholic parishes of Cloyne all computerized in its data base. The Cloyne Diocese represents 1/3 of all the Catholic parishes in County Cork. My hunch is that Edmund and family were from Cloyne, as opposed to West Cork or the 3rd diocese in County Cork.

I don't know the source for Edmund's 5/6/1842 birth date on the tombstone. As frequently is the case, a living relative has hearsay knowledge about a birth date and they can be unreliable. However, of the Edward/Edmond/Edmund Scullys baptized within a 10 year period of the 5/6/1842 birthdate, only the 4/30/1842 baptized Edmund is actually spelled Edmund and it is closest to the 5/6/1842 date. It may be nice to add that info. in case one in the family later chooses to take more research in Ireland. My guess is that individual research (professional) in Ireland is quite expensive as the Irish economy is doing quite well and prices are steep. We may never find the actual Edmund unless we can confirm the 3 siblings also came to Galesburg area."

from Ellen Milnamow via the Internet in regards to Edmund Scully and Margaret Godsil and her death on news that her son was killed.
“Mrs. Scully is my great-grandmother ... was told in error that my grandfather had been crushed to death in a train accident (he was a train engineer). He was only injured with a broken leg but the shock of the news was too much for her. When she came to the US from Ireland, she came with her twin brother who died while on board the ship. She came over to follow Edmund Scully and become his wife.
I just talked to my mom. She was born after Margaret died. She remembers talk of a "Riley" coming over maybe with Margaret & Maurice. Margaret's parents did not want her to marry Edmond. They did not think he was good enough. She did not know any info on Margaret's parents. Unfortunately, when she was growing up the adults did not talk much about the old country and did not like to answer questions. She heard that Edmond was raised by 2 maiden aunts that ran something like a sea-side resort but not sure if this is true.”