Early Online Obituaries are quite rare -online .
Public Library - for the area - or a Large Public Library - University Library - may hold old newspapers in their collection - on microfilm.
Genealogical Societies may be able to advise - re deaths obituaries etc
Not everyone had an obituary published - some may just be a notice of death - and date and place of funeral service -
Do you have any given names ? - Posting those would be helpful - there may be persons researching to - or connected to the family - which could save you much time and effort
Some persons at these message boards - have excellent resources - and offer help -
http://www.rootsweb.ancestry.com/~canon/research-topic-newsp...http://www.bac-lac.gc.ca/eng/discover/genealogy/Pages/introd...