Hello I am looking for information on a Davidson family who lived in Oshawa, Ontario, Canada

Robert (Robert R.) was born between 1900 and 1910 - engineer at GM
married with Aline Bertrand (born 1911 - --death in 1962)

one daughter: carol ann

Robert might have remarried with Ilsa

Can you help me retracing this family.

Thank you for your help