May 10, 1949

I'm looking for my dad's biological family. The only thing I know is my dad was adopted and that my dad says he was born in Palmerston, Ontario and his birthday is May 10, 1949. He says that his mom was a young girl who lived on the farm (although my dad likes to tell tales sometimes!) My dad said he tried to find them through the CAS? but they didn't get back to him. They told him it would be a little before they got back to him with something but they never did contact him again. (once again I dont' know if my dad did contact anyone as he likes to tell tales!) If anyone has anything they could offer let me know. Thanks