He represented Bandonbridge in the Patriot Parliament and fought and died for King James II at the Battle of Aughrim.
His father's family were the MacCarthy Reagh, a Gaelic Irish dynasty that branched from the MacCarthy-Mor line with Donal Maol MacCarthy Reagh, the first independent ruler of Carbery.
125 in O'Hart's Pedigrees), was friends with John Churchill during the ascendency of King Charles II.
[6] In 1688 MacCarthy raised an Irish regiment of infantry in support of King James II during the Glorious Revolution.
[8] MacCarthy married Maria daughter of Richard Townsend, a Protestant.