When Nielsine Petrea Juliane Lauridsen was born on 4 December 1882, in Bøgballe, Øster Snede, Vejle, Denmark, her father, Julius Laursen, was 33 and her mother, Karen Marie Nielsen, was 36. She married Peter Knudsen on 30 April 1910, in Føvling, Skanderborg, Denmark. They were the parents of at least 4 sons and 5 daughters. She lived in Føvling, Tyrsting, Skanderborg, Denmark in 1890 and Uldum, Nørvang, Vejle, Denmark in 1925. She died on 17 November 1954, in Uldum, Vejle, Denmark, at the age of 71.