Help with is Edel Chalmer wife of Edmund

Hi I have found 2 graves in the Kvitnes cemetery in Nordland/Hadsel which I know one is my ancestor Edmund Chalmer born 8/7/1885 in Haugsund, died 5/3/1964 Kvitnes. His parents are Thomas Chalmer and Augusta Olava Ohlsen and I have Edmund, his mother and his sister and her family in Drobak on 1900 census. Right next to his grave is a headstone for Edel Chalmer born 26/6/1892, died 30/1/1959. Is she his wife?, I googled Edel and an article said farm at kvitnes owned by Edel Chalmer British businessman. I have been on the Norway National Library site and searched Edel Chalmer and there are references to him/her in a few books and after using my translating wed tool is appears Edel is Edmunds wife. Could someone please be kind enough to confirm if she is his wife. Edmund was arrested by the Germans in ww2 as he was British and on his farm there was a radio used to send info back to England on what the Germans were up to. Many thanks Shirley in NZ