William de Duston

✓ William de Duston of Duston, Northamptonshire, held tenements of the king in chief there; father of three daughters and coheirs, Isabel (wife of Walter de Grey), Roesia (de Vylli) and Joan (wife of Mauger le Vavasour), under age at his death; their wardship came to Walter de Gray, Archbishop of York, who married them - so William died before the Archbishop's death in 1255. Son of William de Duston, Isabel's grandfather. Wife not named. Source: Cal. Inq. Post Mortem I no.760 (55 Hen. III, 1271), inquisition on 100s. rent at Ditton, Kent (british-history.ac.uk). [DIRECT ANCESTOR OF THE COMPILER: flag added 15 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]