Thomas Alfred Eddon was born in Liverpool, England on 25 December 1886. He was the son of Harry Thomas Eddon, a coachman, and Kathleen Knowles.
Eddon (sometimes listed as Eaton) first appears on crew records in 1906 when he was a boots boy aboard Campania. In April 1912 he was a steward aboard Carpathia when that ship rescued the survivors of the Titanic disaster.
Eddon remained at sea for several years but later worked as a groundsman. He married in 1945 to Margaret Bushnell (1903-1991) but had no children. He died in Liverpool on 14 February 1956.