Individual Details

William was a younger son.

http://www.tudorplace.com.ar/POYNTZ.htm#William POYNTZ1
He is mentioned in his father Inquisition Post Mortem. He is NOT mentioned as a son of Humphrey in "Burke's Genealogical and Heraldic History of the Landed Gentry." Founded 1836 by John Burke and Sir Bernard Burke, C. B., LL.D. (Ulster King of Armes 1853-1892). Edited by Peter Townend. Eighteenth Edition, Volume One, MCMLXIX (London: Burke's Peerage Limited, 1965), pp. 579-583.

Birth	Ca 1464	Langley, Devonshire, England
Death	Bef 1515

Child	Wilmot Poyntz (1487 - 1558)
Child	Elizabeth Poyntz ( - )

Father	Humphrey Poyntz Esq. (1430 - 1487)
Mother	Living
Sibling	Nicholas Poyntz ( - )
Sibling	Katherine Poyntz ( - )