Background
Clark was born the son of Alexander and Margaret (née Johnston) Clark of Maghera.
Clark was born the son of Alexander and Margaret (née Johnston) Clark of Maghera.
He inherited Largantogher House, Maghera, County Londonderry on the death of his father in 1842 and was appointed High Sheriff of County Londonderry for 1849. Clark"s grandson was James Lenox-Conyngham Chichester-Clark and his great-grandson was Prime Minister of Northern Ireland, Lord Moyola. He was the father-in-law of John Kells Ingram.
17th United Kingdom Parliament]
He served as a Unionist Member of Parliament for County Londonderry from 9 March 1857 until 1859. He was a member of the Carlton Club, London.