Hagen under Marum, Atrå, Tellemarken, Norway

Osten Hans Hansen was born at the Hagen farm 26 January, 1875. I think his parents were Hans Olsen Hagen and Lisbet Ostensdatter. He was baptized at the Tinn Lutheran Church 26 June, 1875. I am interested in his parents. Did they go to America? Did they have other children? Who were their parents? Were they husmanandfolk? Takk in advance!