William Marks was baptised on 15 Dec 1618 at Steeple Ashton, Wiltshire, son of George.
William was recorded in the Markes pedigree at the Visitation of Wiltshire in 1623 as the son of George and Katherine.
↑ Transcript of Steeple Ashton Parish Register. Wiltshire and Swindon History Centre.
↑ Visitation of Wiltshire 1623. Edited by George W Marshall, 1882.
↑ Wiltshire Visitation Pedigrees 1623. With additional pedigrees and arms collected by Thomas Lyte of Lyte's Cary, Co. Somerset 1628. The Publications of the Harleian Society. Vol LV and LVI. Edited by GD Squibb. 1954.