John de Troye

John de Troye (died 1371) was a Welsh-born Crown official and judge in fourteenth century Ireland, who held the offices of Chancellor of the Exchequer of Ireland and Lord Treasurer of Ireland. He was also a leading ecclesiastic, whose most senior clerical office was Chancellor of St. Patrick's Cathedral, Dublin. He was a notable pluralist.

He took his name from his birthplace, Mitchel Troy in Monmouthshire. In 1358, he undertook several missions on the Crown's behalf in Munster and Leinster, for which the Privy Council ordered him to be reimbursed. In 1360, he granted the office of Chief Serjeant of County Louth jointly to John and Hugh Netterville. For a time he was the tenant of the royal manor of Esker, near Lucan, Dublin, which was generally reserved for favoured Crown servants. He was removed from the Court of Exchequer in 1364, as part of a general "shake-up" of Irish officials, but soon afterwards was compensated by appointment to the more senior office of Lord Treasurer of Ireland.

The Exchequer of Ireland was then divided into two rival factions: Troye was closely associated with the faction headed by John de Burnham, the Treasurer. From 1348 onwards, Burnham was under constant attack from the faction which was headed by William de Barton, who accused him of numerous financial irregularities, and he spent much of his time in England attempting to clear his name. Troye became involved in the controversy: he had already clashed with the English Exchequer over his accounts and been threatened with distraint of his property.

Troye became Lord Treasurer of Ireland in 1364 or 1365, and was made Chancellor of the Irish Exchequer in 1368. He probably died in 1371.