Dear Elaine, thank you so much for replying to me!
2 years ago I went to Portadown (after attending a genealogy seminar in Belfast) and roamed around the country looking for landmarks. using the griffiths valuation I think I pinpointed it to near these crossroads. please look to tell me if I am anywhere near the right place. I think their farmhouse was demolished. nearby were John Joyce and Jane Joyce but I do not know if this John is a relative of Andrew. I only found one brother, James Joyce, but I believe he lived in Portadown, and was not a famer. I would be very happy to correspond with you by email, if you wouldn't mind - this is so exciting for me!
I could not find contemporary Joyce relatives in the area, and it appears the name has died out there..?
best wishes, Louise