Prime Minister of the United Kingdom senior order of chivalry, the Order of the Garter. The practice of creating a retired Prime Minister a Knight (or, in the case of Margaret Thatcher, a Lady) of the Garter (KG and LG respectively) has been fairly prevalent since the mid-nineteenth century. Upon the retirement of a Prime Minister who is Scottish, it is likely that the primarily Scottish honour of Knight of the Thistle (KT) will be used instead of the Order of the Garter, which is generally regarded as an English honour. Historically it has also been common for Prime Ministers to be granted a peerage upon
Prime Minister of Australia Ben Chifley lived the least of all former prime ministers, as he died one year and six months after his term as prime minister. All other deceased former prime ministers have lived at least another 10 years, with the longest surviving former prime minister being Gough Whitlam, who lived 38 years and 11 months after office, surpassing Stanley Bruce's previous record of 37 years and 10 months. The youngest person to become prime minister was Chris Watson37, who was also 37 when he ceased being prime minister. The oldest person to become prime minister was John McEwen67 as an interim