Looking for Information on my Great Grandparents Edmond Flanagan and Catherine Kiely.

.I have traced my paternal line back to my Great Grandfather Edmond Flanagan, (dob approx 1850 He married my Great Grandmother Catherine Kiely,(dob approx 1844) on the 4th of July 1869 somewhere in Co. Tipperary. They had 4 children, Michael, Patrick, John and Catherine and were living in Fethard, Co Tipp. Before they moved over to Northumberland, England in early 1881.

Is there any way I could find out if my Great Grandparents had any Brothers and Sisters. I would be grateful for any help you can give me in my quest.

Thank You. Regards... Michael O'