Jack Sorensen was born in Western Australia, a second generation Australian of Danish, Irish and English heritage. He began his working life as an orchardist on his family's property in Maida Vale, Perth, and then worked as a shearer on stations in the Murchison, Gascoyne and Kimberleys. In 1936 he returned to Perth and began work as a representative of the United Press, travelling throughout Western Australia. In 1942 he joined the Army, and was discharged in 1944. In the middle of 1949 he began a sea voyage to Queensland, but died by his own hand on the ship in Sydney. He was buried in the Guildford Cemetery in the Upper Swan district where he grew up.