William de Karlell

William de Karlell (died 1383) was an English-born judge, administrator and cleric in fourteenth-century Ireland. He held numerous benefices including Archdeacon of Meath and Rector of Youghal, and sat in the Irish House of Commons. After many years as a Baron of the Court of Exchequer (Ireland) served briefly as Chief Baron of the Irish Exchequer. He is buried in St Canice's Cathedral, Kilkenny.

He took his family name from his birthplace, Carlisle, Cumbria.John de Karlell (died 1393), Chancellor of St Patrick's Cathedral, Dublin, was his brother; John also in time became a Baron of the Exchequer. They were apparently of fairly humble origin, as suggested by the later comment that William was not a fit person to arrest a member of the aristocratic Wellesley family.

He came to Ireland as part of the entourage of Lionel of Antwerp, the Lord Lieutenant of Ireland in 1361, and was made Baron of the Court of Exchequer (Ireland) in 1367. He became a prebendary of St Patrick's Cathedral the same year and later acquired numerous other prebendaries, including Ossory. His main residence was in Kilkenny; he was a burgess of the town and died there. In 1374 he and his brother John were summoned to the Parliament of Ireland in Dublin as two of the King's counsel. In 1383 the King appointed him Queen's Attorney; soon after he was made Chief Baron, but he died within a few months of his promotion.

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