Charlemont was educated at Trinity College, Cambridge.
Henry Caulfeild and Elizabeth Margaret Browne. He was Lord Lieutenant of County Armagh between 1849 and 1864. He succeeded to the title of 3rd Earl of Charlemont, amongst the other peerages, on 26 December 1863.
He was Lord Lieutenant of County Tyrone between 1864 and 1892 and was made a Knight of Street Patrick on 28 December 1865.
Lord Charlemont married on two occasions;
Honorary Elizabeth Jane Somerville, daughter of William Meredyth Somerville, 1st Baron Meredyth and Lady Maria Harriet Conyngham, on 18 December 1856.
Anna Lucy Lambart, daughter of Reverend Charles James Lambart and Marian Smith, on 10 May 1883 at the British Consulate, Pau, France. He died in Biarritz, France and was buried in Street Patrick"s Cathedral, Armagh.
15th United Kingdom Parliament. 16th United Kingdom Parliament]
He was appointed High Sheriff of Armagh for 1842 and held the office of Liberal Member of Parliament (Member of Parliament) for County Armagh between 1847 and 1857.