When Marta Olsen was born in 1672, in Kjøs, Sogn og Fjordane, Norway, her father, Ola Lassesen, was 31 and her mother, Gjertrud Iversdotter, was 27. She married Augund Knudsen in 1700, in Hafslo, Luster, Sogn og Fjordane, Norway. She died in 1749, in Hafslo, Luster, Sogn og Fjordane, Norway, at the age of 77.
Some characteristic forenames: Scandinavian Erik, Nels, Nils, Lars, Alf, Thor, Niels, Sven, Jorgen, Helmer, Iver, Arnfinn.
Danish and Norwegian: patronymic from the personal name Ole, a short form of Olaf, Olav (see Olafsen ). This surname is the third most common in Norway. It is also established in northeastern England and in northern Germany. Compare Ohlsen , Olesen , Oleson , and Olson .
German (Ölsen): habitational name from any of several places so named, in Saxony, Brandenburg, and the Rhineland.