Heber MacMahon was born in Farney, County Monaghan, was educated at the Irish College, Douai, and was ordained at Louvain in 1625. He was Vicar-General of Clogher and later Bishop of Down and Connor. In 1643 he was translated to the see of Clogher. Owen Roe O'Neill chose him as his adviser and on O'Neill's death in 1649 he was asked to lead the Ulster army. He stormed Dungiven, County Londonderry. His troops were defeated near Letterkenny, County Donegal, in an engagement in which he was badly wounded. He fled to Enniskillen, where he was taken prisoner by Cromwellian troops and executed.

Born:	1600
Died:	5 July 1650