I had planned to go to the Hjemmefront Museum today but it was the perfect temperature to head to Vigeland Park and then to Vestre Gravlund which is the cemetery where my great-grandfather Conrad Jensen, my great-grandmother Hilda and my great-uncle Thor were buried. It took some digging and looking through old records but the effort was worth it.
Conrad Hjalmar Jensen (died 1911) and Thor Jensen (died 1941). The gravesite is no longer there as it was taken over by another family, but they helped me locate the site at least.