Cornelius Breen and Catherine (or Katherine) Mary Horan were married 30 Apr 1855
in Freeport, Il. She was born 10 Apr 1834 in Tipperary and died 21 Nov 1890 in Iowa. They did have a lot of kids and
lived in Wisconsin before moving to Iowa. My Ggrandfather's
sister came from Tipperary at the age of 14 and lived with
Cornelius (her uncle). She also moved to Iowa with them and later marries and lives in Iowa until she passed away.
Hope this helps. Do you know the name of Cornelius's mother