Unfortunately, the current deaths database for Ontario stops in 1938.
You can request a manual search from the Ontario government, but it sounds like a lengthy process:
http://www.ontario.ca/government/how-get-copy-ontario-death-...Order a death search
You can request a search if you do not know the exact date of death.
A search will verify that the death has taken place and has been registered with the province of Ontario.
You will receive a letter in the mail giving you information that matches the criteria within the years you searched. If no information is found you will still receive a letter stating that no information was found.
To request a search you can use the same online service as a certificate application but you will select the search option and indicate how many years would like to search.
Note: Searches do not offer the same online guarantee as a certificate and there is no emergency service offered for a search.
Cost
$15 for every 5 years period that is searched
Delivery
6 – 8 weeks
Historical certificates
Historical events, such as deaths prior to 1980, marriages prior to 1980, and births prior to 1930 may not be in electronic format.
When applying for a death certificate prior to 1980, marriage certificate prior to 1980 or a birth certificate prior to 1930, it can take up to an extra 6 to 8 weeks for the registration to be converted into an electronic format before processing can be completed.
Registrations that are not available electronically are not included in the service guarantee.
==============
In the mean time, you might try:
Findagrave .com
Billiongraves .com
CanadianHeadstones .com
http://www.geneofun.on.ca/ongenweb/http://www.ourontario.ca/demo/news.htmlhttp://www.ontariogenealogy.com/ontarionewspaper.htmlhttp://www.ogs.on.ca/branches.php