Antoinette Hansen Heritage

Hello! Thanks for reading this. I am researching my late grandmothers family. My gran was born in London 1940, to Edgar Linden. He was born 1882 to Antoinette Hansen (from Halden, Norway) and Chrysanthus Spettel (from Prussia). I've made some good progress on the tree to date but im really struggling to break down some brick walls im coming across at the moment so reaching out for some help or guidance. Antoinette was born 1850 in Halden, Ostfold. Her father was Hans Andreas Hansen and her mother Else Dorthea Pedersdatter. I believe Hans Andreas was born 1819 to Hans Arvesen and Elisabeth Gundersdatter. I found a marriage for Hans and Elisabeth which gave a birth date for Hans and then i was able to track down one individual who matched. Hans Arvesen born 1797 to Arve Nielsen and Anne Simonsdatter. Through Anne Simonsdatter i believe my tree to be linked to the Grinder farm in Aremark which has allowed me to use the book "Slekten Fra Grinder I Aremark" to trace this line back to the 1600s. Unfortunately, the book traces a line that doesnt lead to my direct ancestors, focusing instead on a great uncles line down to the 1940s. As a result, i have as of yet been unable to find anything on Hans Arvesen's brothers - Simon, Peder and Niels. I'm hoping to be able to trace these lines down in order to find a DNA link to confirm this family line. Interestingly though I believe Hans Arvesen's other child - a daughter Elen Andrine (born 1821) married into the Elvestad family and one of her descendants was journalist Karl Elvestad. The brothers however, are my first brickwall. My second brickwall is the maternal line of Antoinette Hansen. I know her mother was Else Dorthea Pedersdatter. Her marriage to Hans Andreas Hansen records her coming from Berg and i was able to find a matching record in Berg. Else born to Peder Pedersen and Christina Olsdatter. I searched for a marriage record in the digital arkive for this couple and came across one in 1817. It lists Peder's residence as Vohlen and Christina's as Svegaard. Given how common Peder Pedersen as a name is i am reluctant to follow hints on ancestry, findmypast etc. A search for Vohlen has returned no similar records for Peder and Svegaard has returned nothing for Christina. The marriage record i found also did not show parents names so i have no way of moving past these guys! Any guidance here would be massively appreciated - sorry for the long post!