When Peder Parelius Tuseth was born on 28 April 1912, in Trondheim, Sør-Trøndelag, Norway, his father, Torsten Johnsen Tuset, was 35 and his mother, Ingeborg Jensine Oline Larsen, was 30. He married Marit Brolin in 1938, in Trondheim, Sør-Trøndelag, Norway. They were the parents of at least 1 son. He died on 18 July 2000, in Hjelmset, Nordland, Norway, at the age of 88.