Great, Great Grand Parents marriage ect

I am looking for the parents of my great grandfather's parents. Hans Christiansen born 1779 and died 1859 and Kari Pedersdatter ( 1786-1868) their son Ole Christian Hansen was confirmed October, 4, 1835 Gaarsrud, Jevnaker Church. I am not sure if the parents are also from that area or not. I was wondering when they got married and if Ole had any siblings