Looking for Birth Details of J G a O Hagan

My Grandfather James Gibson Adolphus O'Hagan was born at Green Castle Belfast circa 1865, he came to England and married my Grandmother Ellen Emily Frampton, we think that because he married outside his faith that his family may have cut him off, however, my Uncle could remember a Judge O'Hagan coming to visit in the early 1900's. We have James's marriage certificate that says that his father was also a James and that he was a Teacher, there was no mention of his mother. Is there anyone out there who can place these James's in their family tree.