Sarah Thurtell, daughter of John and Elizabeth Thurtell, is mentioned in the will of her father in 1767, in which she was bequeathed an equal share (with her brothers John and James) of her father's property in Boarstreet, Norwich. Her mother was to have the use of this property while she lived. It appears that Sarah Thurtell was unmarried in 1767. She may be the Sarah Thurtell who witnessed the marriage of James Thurtell and Winifred Nunn in 1758.