I realise I'm a little bit late replying! I was working back through our tree (my mother was a McAfee), and reached my great grandfather John McAfee. His death from tuberculosis in 1911 was certified by his sister Lizzie Orr. Looking at the 1911 census, the Orr household included grandmother Rose McAfee, a widow aged 69, Roman Catholic, born Co Derry.
Going back to the 1901 census, Rose McAfee, a widowed seamstress aged 60, Roman Catholic born Co Derry, is living with daughter Mary and son-in-law James Alexander. Looking at the marriage certificate of Mary and James, Mary's father was called James. And the only marriage I can find of a James McAfee to a Rose is the same one listed by aghadowey - James W. McAfee marrying Rose Mullan on Christmas Day 1864.