Of an ancient Irish family (once known as the O’Caharny), Fox was one of ten children of a county Longford gentlemen who commanded the county militia, whose estate at Fox Hall had been granted to his ancestor by James I in 1620.
Born in county Longford, Fox trained as a barrister in Dublin and established a practice there. He owned jointly with his brother, Barry Fox, an estate of about 11,000 acres at Keady, co. Armagh, and also held land at Keel, near Ardagh.
Fox is not known to have contributed to debate during his short time in Parliament, and did not sit on any committees or introduce any bills. He was, however, a regular attender and divided on 35 occasions in the early summer of 1837, attending closely the committee stages of the Irish poor relief bill, and voting for Lucas’s amendment to make provision for settlement, 12 May 1837. He voted against the second reading of the ministry’s bill for the abolition of church rates, 23 May 1837.
Fox stood again for County Longford as the second Conservative candidate alongside Anthony Lefroy at the 1837 general election, both candidates ‘being mutually pledged to petition in case of an unsuccessful issue’.
A member of the Armagh Constitutional Society, Fox was several times nominated, though never appointed, to the post of high sheriff of county Armagh.
Fox died at Mount Anville, co. Dublin in February 1862.
