Norton Louis Philip Knatchbull, 3rd Earl Mountbatten of Burma (born 8 October 1947), married Penelope Meredith Eastwood (born 16 April 1953) and have three children. The Hon. Michael-John Ulick Knatchbull (born 24 May 1950), producer and editor, married Melissa Clare Owen (born 12 November 1960), daughter of judge Sir John Arthur Dalziel Owen , on 1 June 1985 and they divorced in 1997.
Lord Mountbatten was born in Lambeth as the eldest son of Patricia Knatchbull, 2nd Countess Mountbatten of Burma, and John Knatchbull, 7th Baron Brabourne. Mountbatten was educated at the Dragon School, in Oxford, and Gordonstoun School, Elgin, Moray, Scotland. He subsequently attended the University of Kent in southeast England.
Alexander was the second son of Prince Alexander of Hesse and by Rhine by the latter's morganatic marriage with Countess Julia von Hauke. The Countess and her descendants gained the title of Princess of Battenberg (derived from an old residence of the Grand Dukes of Hesse ) and the style Durchlaucht (" Serene Highness ") in 1858.