Records of Prime Ministers of the United Kingdom transitions between reigns, eight Prime Ministers each served under two sovereigns: George III had 14 Prime Ministers serving during his 59-year reign (reigned 1760–1820), beginning with the Duke of Newcastle. The last incumbent, Lord Liverpool, was the only one appointed by his son (the Prince Regent) during the father's final incapacity to rule. In downward numerical order, numbers of Prime Ministers in office during other reigns are: Only six Prime Ministers came to serve office under sovereigns in whose own reigns they were born. The present Prime Minister, Theresa May, is the third Prime Minister to have been born in
Records of Prime Ministers of the United Kingdom returning in that of 1950 more than four years later. Of parliamentary constituencies that have been represented, none have been represented by more than one serving Prime Minister. Four future Prime Ministers sat for Newport, Isle of Wight (constituency abolished 1832): Lord Palmerston and Sir Arthur Wellesley (later the Duke of Wellington) in 1807–09, George Canning in 1826–27 and William Lamb, later Lord Melbourne in April–May 1827. It is rare for veteran Prime Ministers sitting in the Commons to lose seats through electoral defeat at subsequent general elections. Those who have are: Five Prime Ministers through longest unbroken service became