Another connection was through Louis Mountbatten, the last viceroy of India, and known more popularly as Lord Mountbatten in the country. Lord Mountbatten was 79. They have three kids together; Nicholas Knatchbull, Lord Brabourne, Lady Alexandra Hooper and The Hon. Lord Mountbatten was a frequent presence in Charles' childhood. The day Lord Mountbatten, two boys, one woman and 18 soldiers died ... Mountbatten, his 14-year-old grandson Nicholas, and Nicholas’s grandmother, the 83-year-old Dowager Lady Brabourne. They were enjoying a leisurely holiday outing in the family’s boat on the waters off of Mullaghmore in County Sligo, Ireland, when a bomb … Countess Mountbatten is the wife of Earl Mountbatten, Norton Knatchbull – the grandson of Philip’s beloved uncle the 1st Earl Mountbatten, who was murdered by the IRA in 1979. The Countess, who is also known as Penny to friends and family, is married to the Earl of Mountbatten, Norton Knatchbull, who is the grandson of Prince Philip's uncle Lord Louis Mountbatten. Countess Mountbatten is the wife of Earl Mountbatten, Norton Knatchbull – the grandson of Philip’s beloved uncle the 1st Earl Mountbatten, who was murdered by the IRA in 1979. Mountbatten’s grandson Timothy–Nicholas’ twin–was injured; as was his daughter, Lady Brabourne; and the twins’ father, Lord Brabourne. Another passenger, the Dowager Lady Brabourne, also died the day after. On the 27th of August 1979, Louis Mountbatten, the Earl Mountbatten was murdered along with his 14 year-old grandson, Nicholas Knatchbull, 15 year-old Paul Maxwell, and Baroness Brabourne, the 83 year-old mother in law of the Earl’s daughter. Countess Mountbatten is the wife of Earl Mountbatten, Norton Knatchbull - the grandson of Philip's beloved uncle the 1st Earl Mountbatten, who was murdered by the IRA in 1979. Lord Mountbatten was the maternal uncle of Philip. James Alexander Philip Theo Mountbatten-Windsor, Viscount Severn (born 17 December 2007) is a member of the British royal family.He is the younger child and only son of Prince Edward, Earl of Wessex, and Sophie, Countess of Wessex, and the youngest grandchild of Queen Elizabeth II and Prince Philip, Duke of Edinburgh.He is 13th in the line of succession to the British throne As well as Lord Mountbatten, Mountbatten’s teenage grandson and a teenage boathand also died in the attack. Both were descendants of Queen Victoria, the famous 19th century British monarch. Lord Mountbatten was the great-grandson of Queen Victoria. Emmy Griffiths Lord Mountbatten's grandson Timothy Knatchbull survived the IRA attack in 10978 The Crown 's opening episode looks at the tragic deaths of Lord Mountbatten, his son-in-law's mother Dowager Lady Brabourne, his grandson Nicholas Knatchbull and a crew member Paul Maxwell in a boat explosion orchestrated by the IRA in 1978.