Hello
I have a Joseph Capper, born Nov 1825 inWaringstown, Donaghacloney, Down, Ireland
His father was Matthew Capper (1777 – 1851), and his brother John Capper, was a Wesleyan Methodist minister. So this line of the Capper family was Methodist / protestant which may be why you are seeing the Lurgan Methodist connection in some marriages mentioned in this thread. If you would like more info on the family, let me know (I can put in touch with a descendant of Rev John Capper)