Thomas Dillon

Thomas Dillon (c. 1535 – 1606) was an Irish judge and landowner: his descendants held the title Baron Clonbrock.

He was born at Proudstown, near Navan, County Meath. He was a grandson of Gerald Dillon, whose elder brother Sir Robert Dillon founded the senior branch of the family which held the title Earl of Roscommon. Thomas's father, Richard Dillon (died 1565), son of Gerald and his wife Ellen Macrery, was a judge of the Court of Queen's Bench (Ireland). He briefly held office as justice of Wexford, then practised on the Connacht circuit. He became Chief Justice of Connacht in 1577, in which office he gained a reputation for integrity, and was suggested as a possible Lord Chief Justice of Ireland in 1582.