When Nelson Jæger Andersen was born on 4 October 1868, in Tjøtta, Alstahaug Prestegjeld, Nordland, Norway, his father, Anders Andersen, was 35 and his mother, Johanna Petrine Jacobsdatter, was 26. He had at least 5 sons and 4 daughters with Johanna Emilie Pettersdatter. He died on 15 March 1922, in Vevelstad Prestegjeld, Nordland, Norway, at the age of 53.