Was he born in Ontario?
As mentioned by O_Lorelie, birth registrations after 1914 are not available to the public yet. Go to this website for a guide.http://www.archives.gov.on.ca/english/archival-records/inter...
You must go to the Office of the Registrar General for more recent births. https://www.orgforms.gov.on.ca/eForms/start.do
You could try going through local newspapers and look for his birth announcement. Most libraries can help you with this, even with email requests.
A helpful link with the Barrie Public Library is http://www.library.barrie.on.ca/programmes/genealogy.htm