 Lyons is the only Australian prime minister to have held office during the reigns of three monarchs, and the only prime minister to serve throughout a monarch's entire reign.It was initially assumed Lyons would be succeeded by his deputy John Latham, but Latham left parliament at the 1934 election and the following year was appointed Chief Justice of Australia.His replacement in the Division of Kooyong was Robert Menzies, a prominent figure in Victorian politics and an ally of Lyons.