Castleblaney is in County Monaghan, the next county over from Armagh. I think it's about 20 or so miles south of Portadown. Elizabeth May's parents were named Peter and Sarah, born late 1700s. Elizabeth was born in 1807. She only had one brother who's name was john. The family moved to Canada, outside Toronto, in the late 1820s. I have not come across William Harry May in my research. If I do, I will contact you.