Lockett was born in the small Victorian town of Waanyarra, near Bendigo. He left school at the age of 9 to work on a local farm. Later, he worked for his uncles in The Mallee. On 24 March 1916, he travelled to Mildura to enlist in the Australian Imperial Force. He served in France with the 38th Battalion, earning promotion to sergeant and was discharged on 20 September 1919. After the war, Lockett returned to The Mallee and selected a block of land in Linga, Victoria, deciding to make his living as a farmer. In 1923, he married Maybell Ingwerson and they had four children together. In 1963, the couple retired to Bendigo, leaving the farmland, in the care of their children and grandchildren. After turning 100, Lockett was regarded in Australia as a "legend", "noted not only for his remarkable lucidity and age, but as one of Australia's few surviving World War I veterans." In 1998, Lockett and his known fellow surviving veterans were awarded Chevalier of the Légion d'honneur by the French government for their service in the war. The ceremony was held in Lockett's home town of Bendigo, attended by Prime Minister John Howard, who described Lockett as a "priceless national treasure.... who represents so much of what is the true Australian spirit... courage... adventure... a willingness to share adversity". In 2000, at the age of 109, Lockett participated in the 2000 Olympic Torch Relay. On 11 June 2001, he was awarded the Medal of the Order of Australia for service to the community of Bendigo, particularly as a representative of Australia war veterans. Lockett died of kidney failure at age 111 years, 123 days, just three days after fellow supercentenarianChristina Cock, the oldest woman and person ever in Australia and Oceania. Lockett was the oldest man and Freemason ever in Australia and in Oceania. He was honoured with a state funeral, and described as "a hero of the nation", who "was indeed the quintessential Australian battler. Whatever hand of cards fate dealt him, his response was, `No worries.' " At the time of his death, he was survived by four children: Jack, Kevin, Joyce, and Ron; fifteen grandchildren; and twenty-four great-grandchildren.