Thomas Dillon (c. 1535 – 1606) was an Irish judge and landowner: his descendants held the title Baron Clonbrock.
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 continued to spend most of his time in Connacht, but in 1596 he clashed with his formidable superior, Sir Richard Bingham, the Lord President of Connaught, and was committed to Dublin Castle as a result.
Her stepfather Sir Thomas Lestrange (died 1590) was Bingham's Deputy as Lord President of Connaught.
They had at least one son Robert (died 1628), and a daughter Jenet, who married Sir John Bathe of Drumcondra, Dublin, a leading spokesman for the Roman Catholic community, by whom she had five children.