Donald and Daniel St.Cyr twins Lynn, MA

Hello, We are looking for my twin Uncles Donald and Daniel St.Cyr born Lynn,MA 1948-1950 ish. Possible adoption in Nova Scotia Canada. Catholic Charities may have been the agency. My Aunt remembers her parents rented a house in Belevis Cove in 1957. Digby County come to mind. And more recently Kingston. Any information would be great! Thanks :)