I am researching my mothers (Agnes Costigan) side of my family tree. She was born in Clonakenny, Co Tipperary in January 1916 and had ten other siblings.
Her father (Michael Costigan) was the village blacksmith in Clonakenny, and he married a Johanna Mahon in February 1905. Johanna Mahon's parents were Michael Mahon and Mary Treacy.
Michael's father was Matthew Costigan, and he married Johanna Shea in October 1868. Johanna's father was Dennis Shea, but I don't know who her mother was.

Browsing this site I noted some interesting messages going back to 2001 which might be relevant to my search. Does anybody reading this recognise a thread or have any information which may help me.

with thanks

Jim Molloy