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 Eleven Prime Ministers have served their entire terms as Members of the House of Commons but were elevated to the House of Lords afterwards by being created peers: In contrast 17 Prime Ministers preceding the current (Theresa May) have never become members of the House of Lords. Henry Pelham (served 1743 to his death in 1754) was the first to be a lifelong 'Commoner' but the convention of Prime Ministers leading from the House of Commons only became established in the 20th century. Holders of Irish peerages (with the exception of 28 Irish representative peers allowed after 1801, who were