Yes, my James Ritchie and Catherine Johnston would have married abt 1824 as their firstborn was May 5, 1826 in Magherafelt, Co. Derry. I am pretty sure that my James Johnston and Catherine are siblings but his death says he is from Co. Antrim. My James born 1798, Catherine 1803, and William 1812. I am pretty sure they are all siblings but probably will never prove it. My James' son James married Catherine's daughter Sarah Jane Ritchie.
Who did your James born 1881 marry? I have many other lines from Co. Antrim in particular Boyds and Beggs.
Peggy