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 the reign of the present sovereign Queen Elizabeth II. King George III (reigned 1760–1820) Queen Victoria (reigned 1837–1901) Queen Elizabeth II (acceded 1952) <nowiki>*</nowiki> Perceval was assassinated in 1812. His is the only complete lifetime lived by a Prime Minister under a single sovereign. Both Robert Walpole (1676–1745) and Lord Wilmington ( 1673–1743) lived under the reigns of the same six sovereigns: Charles II, James II, William III and his joint sovereign Mary II, Queen Anne, George I and George II. Sir Winston Churchill (1874–1965), Clement Attlee (1883–1967), Anthony Eden (1897–1977) and Harold Macmillan (1894–1986) all lived under the six