I am from perhaps different clan of renaghans in Derrynoose near Keady in Co Amagh. My Grandfather was Michael Renaghan, died circa 1943. He had a brother, who died as an infant, and three sisters - Mary Ellen who I think went to England, Bridget and Margaret.
An Alan Ronaghan from Canada has traced his ancestors to these parts and has found a lot of info. I'll check these sources again and report back later

Gerry