He was the eldest son of Henry Saunders of Ewell, Surrey.
He was a Member (MP) of the Parliament of England for Gatton in 1529 and Surrey in October 1553, November 1554 and 1555.
He married twice: firstly Joan (d. 1539/40), the daughter and coheiress of William Marston of Horton, Surrey, and the widow of Nicholas Mynn of London and Norfolk (d. 1528), and secondly Joan (d. 1580/1), the widow of Thomas Gittons of London (d. 1543).
Some sources give four of his daughters to his second wife,[1] but others, who are probably right, give all of his children to his first wife Joan Marston, the widow of Nicholas Mynn of London and Norfolk.
[2] Children of William Saunders and Joan (d. 31 October 1540), the eldest daughter and coheiress of William Marston of Horton, Surrey, and the widow of Nicholas Mynn of London and Norfolk[3]