Hi, What are the full names of the persons you are researching?
Have you checked with any current Catholic Church in Cochrane Ontario - Canada
They will know where any early records are held
http://www.hearstdiocese.com/english/CochraneTransEN.htmlDeaths are required to be registered with the Provincial Govt
Registration of Death - Long form Death Certificate - from Govt Vital Statistics Registry Office
Do you know the Cemetery where a burial may have taken place.
Cemetery Office - will have records - date and place of death / burial etc. They will know name of Funeral Home / Undertaker -
If you know an aprox Date of Death - OBITUARIES may have been published.