The Oshawa Union Cemetery is huge. They should have a record of all the burials. They have an e-mail address which might make things easier.
http://www.oshawa.ca/mun_res/cem_ser.aspLocation: Oshawa Union Cemetery
760 King Street West,Oshawa, Ontario L1J 2L3
Phone: 905-436-3311
Fax: 905-725-0973
Email:
unioncemetery@oshawa.ca