On February 14th, 2005, he became the oldest living British Prime Minister at 92 years, 10 months and 18 days old.
Prime Minister of the United Kingdom (April 1976 - May 1979).
He was created a Knight of the Garter by HM Queen Elizabeth II in 1979 and subsequently a life peer as the Baron Callaghan of Cardiff upon leaving the House of Commons in 1987.
He is the only man to have held the highest four positions in the British government: Chancellor of the Exchequer (1964-1967), Home Secretary (1967-1970), Foreign Secretary (1974-1976) and Prime Minister (1976-1979).
Resigned as leader of the Labour Party in 1980, the year after his general election defeat by Conservative Margaret Thatcher .
He and Audrey are survived by their three children, 10 grandchildren and six great grandchildren.
It is in large part due to his wife Audrey that he remained in politics after the devaluation of sterling on 18 November 1967, when he was chancellor of the exchequer. Were it not for her advice in the course of their long private discussions late into that night, he would have resigned from the government and might never have succeeded Harold Wilson as prime minister in 1976.
His eldest daughter Margaret Jay - now Baroness Jay of Paddington - was formerly Lord Privy Seal, Leader of the House of Lords and Minister for Women. Previously, she was Minister of State at the Department of Health.
His wife, Audrey, latterly Lady Callaghan of Cardiff, was Chairman of the Great Ormond Street Hospital from 1969 to 1982. It was she who prompted Jim to amend the Copyright bill and make the Hospital's copyright of "Peter Pan" permanent.
He and his wife were married for 67 years. His wife Audrey passed away on 15 March aged 91, so he was only a widower for 11 days.
He was the tallest Prime Minister of the United Kingdom at nearly 6'1".
He died on the sixtieth anniversary of the death of David Lloyd George, one of his predecessors as British Prime Minister.
Ex-father-in-law of Peter Jay.
On 3 Apr 2016, BBC Parliament channel broadcast Callaghan Night to commemorate 40 years since he became Labour leader.