When Niels Johnsen Andersen was born on 26 December 1903, in Gimming, Dronningborg, Denmark, his father, Bernhard Adolph Andersen, was 19 and his mother, Nielsine Kristine Nielsen, was 20. He married Edith Alfreda Hansen on 21 May 1930, in Weber, Utah, United States. They were the parents of at least 1 son and 2 daughters. He lived in Harridslev, Støvring, Randers, Denmark in 1906. He died on 2 July 1993, in Ogden, Weber, Utah, United States, at the age of 89, and was buried in Ogden, Weber, Utah, United States.