Jacob Caspersen and Christine Torkidsdr

I'm looking for details of the marriage between Jacob Caspersen and Christine Torkidsdr. That will help me to identify their parents. The couple had a daughter - Anna Caspera Jacobsdr who was baptised on 14 January 1826 at Saaner Akershus. Anna is my GG Grandmother. I think they also had another daughter - Thrine Martine Jacobsdr who was baptised on 13 July 1834 at Vestby Akershus. I would appreciate any help offered.