On March 6, 1642, sold 20 acres in Hartford, Hartford County, Connecticut to Thomas Hosmer [Source: Barbour, Lucius Barnes, "Families of Early Hartford, Connecticut"]

It is unknown who his parents were. He could not have been the son of Judge Henry Smith and Ann Pynchon as some genealogies show, because that couple did not get married until aft 1637, whereas Giles was born in 1603 according to the "History and Genealogy of the Families of Old Fairfield, Volume 2 ". According to "The Planters of the Commonwealth, 1620-1640 ", Ann immigrated with her parents in 1630 indicating that she was not married and was therefore probably not born before 1610. According to the "National Genalogical Society Quarterly, Volumes 1-85 " Henry did not immigrate until April of 1637 so it stands to reason they married after this date. Also Giles is listed in the "Seventeenth Century Colonial Ancestors, Supplement Number Two" as immigrating in 1634. I have found no Genealogical source that claims Giles is their son.

The May 8, 1648 will of Henry Smith of Wethersfield (The Public Records of the Colony of Connecticut, Vol. I, pg 502-504) lists only sons Samuell and Perrigrine.

Some genealogies name his wife Mary Wheeler. I have seen no sources to support this claim.