John de Tryvers, judge of the Court of Common Pleas (Ireland) c.1283-5, was a member of the same family.
He was a man of considerable wealth, who owned the impressive Baldongan Castle in Skerries, County Dublin, and a nearby estate at Courtlough.
During the Wars of the Roses, the dynastic struggle between the rival York and Lancaster branches of the English royal family, Trevers, like most of the Anglo-Irish gentry, supported the Yorkist cause.
In 1461, following the Yorkist triumph, Trevers was appointed Master of the Rolls in Ireland by Richard's son, King Edward IV: the office was granted first to Patrick Cogley, but Cogley quickly exchanged it for the more lucrative offices of Clerk of the Crown and Hanaper and Clerk of the Parliaments.
He was to receive £40 from three individuals of whom the best known is Michael Tregury, Archbishop of Dublin, and in case of default to sue on their behalf on the bond by which they acknowledged the debt.