Arthur Forbes, 1st Earl of Granard (1623–1696) was an Irish Royalist soldier of Scottish descent. He held the position Marshal of Ireland, commander of the Royal Irish Army during the reign of Charles II. A supporter of the Glorious Revolution, he fought on the Williamite side during the War of the Two Kings.

The Royal Irish Regiment, until 1881 the 18th Regiment of Foot, was an infantry regiment of the line in the British Army, first raised in 1684. Also known as the 18th Regiment of Foot and the 18th Regiment of Foot, it was one of eight Irish regiments raised largely in Ireland, its home depot in Clonmel. It saw service for two and a half centuries before being disbanded with the Partition of Ireland following establishment of the independent Irish Free State in 1922 when the five regiments that had their traditional recruiting grounds in the counties of the new state were disbanded.