Garrett (or Gerard or Gerald) Dillon (c.1640-c.1696) was an Irish judge, politician and soldier, who held the office of Recorder of Dublin.
He was born in County Westmeath, the son of Theobald Dillon of Portlick Castle and his wife Marcella Browne.
His rise to high office was rapid: he became King's Counsel and Recorder of Dublin in 1685, and Prime Serjeant in 1687.
On the outbreak of the Williamite War, he entered the armed service on King James's side and was made a colonel.
Sir Edward and his stepfather were political opponents, and perhaps also personal enemies, and Susanna's death sometime before 1689 broke the family tie between the two men.
Edward was a convinced supporter of the Glorious Revolution, and no doubt for that reason the Patriot Parliament, of which Dillon was a prominent member, attainted him.
There is no reason to think that he made any move to help his stepfather, nor perhaps could Dillon, after his own conduct in the Patriot Parliament, have expected any favours from Edward.