The Master Surname Database (not online) (mostly burials in Alberta cemeteries) of the Alberta Genealogical Society lists these names;
Ole MELLENBERG, 1872 - 30 Jul 1948
Ole OPSAHL, - 30 Oct 1929 (also OPSDAHL)
burial next to each other in the Parkland Lutheran cemetery, near Camrose.
For further research please contact the Research Committee of the Edmonton Branch.http://abgensoc.ca/
The Edmonton Branchhttp://www.agsedm.edmonton.ab.ca/