"William Tanfield, B.A., of Gayton, Northants., & Everton, Hunts., ... was recorded as "aged 16" & found to be the heir of his paternal grandmother, Elizabeth Tanfield, at her Inq. P.M., 29 June 1504. He graduated B.A. from Oxford University, 1511" The inquest finding would make his birth between June 1487 and June 1488.
Robert on Genealogics - son Robert's descendants include: Baronets; three Earls of Carlisle; and seven Viscounts Falkland
son William on Genealogics - William's descendants include several Dukes, Lords, Barons, and Earls, an Archbishop of Canterbury, a Gräfin von Dornburg, a Gräfin von Gleichen, a Governor of New South Wales, Lady Diana Spencer, and a Grandee of Portugal