Sarah Secord, daughter of William and Ruth (Hunt) Secord
I have a copy of a transcription of William's will. It lists his daughters, including one named Sarah:
"To my Daughter Sarah the Sum of Four Pounds."
Sarah is said to have married Jacob Flewelling or Flewwelling in New Brunswick about 1808, but I have not been able to find this record. They later moved to what is now Ontario.
In the 1851 census for Townsend Township, Norfolk County, Ontario, they appear on page 1. Jacob was 74 and he was born in the U.S. Sarah was 68 and was born in New York. In the 1861 census for the same place, they appear on page 35. This record is confusing and leaves a number of unanswered questions. Sarah's birthplace was the US and her age was 78. She was listed as a widow. Jacob's name appears under hers, with place of birth also the US, but no age given. A note in the margin to the right indicates that a male family member aged 83 had died of dropsy in 1860, so it seems likely that this was Jacob. The household was headed by Eliza [Sovereen?], who was 54 and was born in New Brunswick, likely Sarah's daughter. Eliza was a widow and had six young people living with her who were presumably her children.
The same family appeared in Townsend in the 1871 census on page 51, where Eliza was listed as Elysa Sovereign, but Sarah was not with them, so it's likely that she had died by then.
The two census records that we have for Sarah suggest that she was born about 1782 or 1783, and the place of birth given for her fits with her family's whereabouts until mid-1783 when they arrived in what is now New Brunswick.