In 1914 Sir Douglas Mawson had married Paquita Delprat. Sir Douglas Mawson returned to the Antarctic in 1929 to 1930 and 1930 to 1931. After his journeys Mawson lived the rest of his life in Adelaide while working as a professor of geology at the university of Adelaide. He also devoted his lecture time to family farming and forestry. He was on the 100 dollar note between 1984 to 1996.Sir Douglas Mawson died in 1958 when he was at the age of 76.