Nielsen surname meaning

Nielsen is a Scandinavian and North German patronymic: “son of Niels.” Niels is the Danish short form of Nikolaus—Nicholas—the Greek name usually glossed as “victory of the people.” The familiar -sen ending is the standard Danish and Norwegian son-marker, closely parallel to Swedish -sson. Nielson, Nilson, and American Nelson often represent the same descent idea under different spellings. Parent’s name is exact, and the Niels formula is high confidence; only the family’s specific parish still needs ordinary genealogy.