Searching for an ancestor born 1925 in Ontario Canada

Jodie asked Olive Tree Genealogy a question about her grandfather:

would there be any way possible that you might know of a William Bulger born June of 1925 in Toronto Canada? it is my grandfather and I am trying to track down ancestry information, sadly his parents died when he was young and there is little information on them, I don't even have a name and my grandfather passed in 1994, can you help or advise me on where to look?

Jodie - Births in Ontario after 1914 are available by contacting the Registrar General. Here  is the address

Office of the Registrar General

Box 4600

Thunder Bay, ON
P7B 6L8

www.serviceontario.ca

416-325-8305

1-800-461-2156 (toll-free, Ontario only)

Provide them with the date of birth, parents' names if known and any other details you have. That will provide you with his parents' names and other information. From there you can start going backwards. 

Presumably if he was born in 1925 his parents were likely born 1909 or earlier so you should be able to find them in census records (the most recent is 1911), marriage records (these are online up to 1928) and so on. Deaths are available online to 1938 so if his parents died before that year you should be able to find them too - and that may give you more information on their parents.