Baby boy, January 1978, Biddeford ME

I am searching for my sister's biological son, born in January of 1978 (possibly 1977 - I was a child when he was born). Here is the information I have: *Mother 17 y/o at birth*Handled by Saint Andre's Home in Biddeford*Adopted into family with an adopted son 2 or 4 years older*Name given at birth: Robert John Frazer Thank you.