Had a look at Ros Davies site and found these bits. Thomas McMillan age 38 married Ann Dorman. Also, Hugh Dornán married Mary McMillan 1860s.
Then there is this: James Roy Ballymurphy widower publican son of James Roy farmer married Eliza McKee 4 Dec 1847 Greyabbey Presbyterian Church witnesses: James McKee & William Roy
James Roy Sr of Ballymurphy died 7 Aug 1849 age 65 husband of Elizabeth Morrison. Son of John Roy.
lastly, John Roy of Ballymurphy died 29 Dec 1819 age 65 father to Jane, John, Hugh & James Roy.