The AGS Master Surname Index of cemetery burials in Alberta cemeteries list 12 PETERSEN burials in the Olds cemetery including these;
Olaf Klandius PETERSEN, - interred 8 Oct 1948
Oline Jensine Kristi PETERSEN, 3 Jun 1902 - 29 Oct 1983
in different areas of the Olds Cemetery.
Peter