When Hugh Sweeney MacMaster was born on 24 March 1914, in Larkhall, South Lanarkshire, Scotland, United Kingdom, his father, Charles L McMaster, was 28 and his mother, Janet Sweeney, was 26. He married Edna Jane Murray Towell on 27 March 1937. They were the parents of at least 1 daughter. He died in 2002, in Longview, Cowlitz, Washington, United States, at the age of 88.