When Mariane Nielsen was born on 1 July 1865, in Nykøbing Morsø, Thisted, Denmark, her father, Niels Christian Eskesen, was 38 and her mother, Karen Nielsdatter Leed, was 33. She died on 31 January 1866, in her hometown, at the age of 0, and was buried in Nykøbing Morsø, Thisted, Denmark.
Some characteristic forenames: Scandinavian Erik, Niels, Jorgen, Knud, Lars, Nels, Bent, Borge, Holger, Ove, Einer, Oluf.
Danish, Norwegian, and North German: patronymic from the personal name Niels, a shortened form of Nikolaus (see Nicholas ). Compare Nielson , Neilsen , Nelsen , Nilsen , and Nilson .