In 1781 he was created Viscount Erne, of Crom Castle  in the County of Fermanagh, and in 1789 he was further honoured when he was made Earl Erne, of Crom Castle in the County of Fermanagh. He sat from 1800 to 1828 as one of the 28 original Irish Representative peers in the British House of Lords.
In 1781 and 1789, he received honors: Viscount Erne for Crom Castle in County Fermanagh; Earl Erne for the same castle. From 1800 to 1828, he was one of the Irish Representative peers in the British House of Lords.