Olai and Johanna Gjeltland/Gjelland

Before presenting this case I’d like to express my gratitude to those patient and altruistic members of this forum who has helped me to solve previous issues hoping luck will strike again. The couple had 2 kids born in Norway, Olga in 1894 and Osvald in 1899. Here is a link https://www.digitalarkivet.no/census/person/pf01036940001489 They emigrated to America and Osvald anglicised to Oswald. The unfortunate son of Oswald posted this unanswered thread at digitalarkivet.no: Trying to locate blood relatives of my father, Oswald Johann Maarsund. I was adopted and renamed Robert Lincoln Gabardy. My Mother and Oswald were divorced and he returned to Norway in the early 1920's. I have never seen him. My father was last heard from in 1929, in a letter to my Step-Grandmother. He was living with an Aunt in Trondheim. Can anyone out there help me? Here we see that Oswald had Maarsund as family name which is the place where the grandmother Johanna came from and the children were born. They might all have had Maarsund as their family name. As we can see the parents divorced and father Olai returned to Norway and Oswald at least was put up for adoption. Their mother Johanna’s full name was Johanna Bergitte Wilhelmine Andrine Sakariasdatter and Andersen from her first marriage. A search for Johanna Bergitte Wilhelmine Andrine Sakariasdatter Gjelland gives this hit at myheritage.com https://www.myheritage.no/search-records?action=person&siteId=327661851&indId=1500346&origin=profile If it’s her she seems to have remarried again and her new family name is Jakobsen which I barely can read from the grave memorial. Full information here is only for paying members. My first question is if someone can confirm if this is the mother of Oswald and Olga and provide more details on her life as a Jakobsen. Did she have more children? Did she marry a 4th time with more children? Where did she live and when and where did she die? There is an odd feeling when trying to study this that Olga and Oswald were put up for adoption to different families and lost contact. In Oswald’s thread sister Olga isn’t mentioned at all. I’d like to learn if they were adopted to the same family or split and who the new guardians were? If there are declassified child protection documents I’d like to learn about them too. Olga married Delmer Carl Hill and had 2 daughters. One of them Donna M Hill was born 1923 and I’m wondering if she died young or started a family?