Earl of Clanbrassil

Earl of Clanbrassil was a title that was created twice in the Peerage of Ireland, both times for members of the Hamilton family.

Clanbrassil was the name of an old Gaelic territory (Clann Bhreasail) in what is now the barony of Oneilland East in the north-east of modern County Armagh, Northern Ireland.

On 4 May 1622 Sir James Hamilton was created Viscount Claneboye, in the County of Down, in the Peerage of Ireland.

He was succeeded by his only son, James, the second Viscount, who was created Earl of Clanbrassil, in the County of Armagh, on 7 June 1647.

On 24 November 1756 he was further honoured when he was made Earl of Clanbrassil, in the County of Armagh, also in the Irish peerage.