William de Vescy of Kildare

William de Vescy, sometimes spelt Vesci, Baron de Vesci, was an illegitimate child of William de Vesci and Devorgille, daughter of Donal Roe Macarthy Mor, Prince of Desmond. He was born in Kildare, Ireland. As he was illegitimate, he had no right to inherit any of his father's properties. In anticipation of this, his father had therefore entered into a number of covenants with Antony Bek, Bishop of Durham designed to enable his son to acquire the properties through entail. Early in Edward I's reign, William asked the king to intervene to enforce the implementation of these covenants.