Background
Southee was born in Mildura to farmer Laurence Southee and Annie Lockie.
Southee was born in Mildura to farmer Laurence Southee and Annie Lockie.
He was educated at public schools in Mildura and Leeton and assisted his father on their farm.
He joined the Australian Labor Party in 1929 and became active in the Australian Workers" Union. In 1962, Southee was the Labor candidate for Blacktown, which had been made notionally Labor by the redistribution (the sitting member, Alfred Dennis, contested The Hills as an independent), and was easily elected. Re-elected in 1965 and 1968, he moved to the new seat of Mount Druitt in 1971.
Southee retired in 1973.
He died at Campbelltown in 1979.
He was an Labor member of the New South Wales Legislative Assembly, representing Blacktown from 1962 to 1971 and Mount Druitt from 1971 to 1973. In 1956 he became President of the New South Wales branch of the AWU, serving until 1961. He was also a member of the central executive (1957–1961).