Ostfold Trogstad Sognhaug nodre Farm lookup

My relative Lars Poulsen (rud) is in the 1865 census as owning and managing his own farm. the farm is listed under district 1 page 15 in Ostfold, Thrygstad I would like a history of the farm. I can't read Norwegian. Specifically I'd like to know if his father owned it before him.... There are no on line parish records for the year he was born 1833 in Thrygstad and I am trying to find Lars Paulsens father and mother and his date of birth and possibly marriage info.