Another clue- Londonderry Sentinel, 7 Dec.1866:
December 3, at the Third Presbyterian Church, Portglenone, by the Rev. H. Perry, John Hilton, Hornells Ville, New York, U.S., to Annie, eldest daughter of William Hilton, Mountgawn, Portglenone.
Must be other Hiltons in the area:
1841 Nancy dau. of John Hilton Bracknamuckly married
1842 Jane dau. of Robert Hilton Bracknamackey married
1858 John Hilton Tullynalummon died aged 86
1868 James Hilton Brocknamuckley died (son of John)