Seeking Tipperary Genealogy Assistance

I am trying to find relatives in Ireland. I can trace the family to the 1911 Census but nothing after that

Thought I saw something once referencing Ballykisteen

John Grandfather
Johannah Grandmother
Cornelius Father (heard he may have been caretaker at Rockwell college?)
Bridget Mother

Daughters
Johannah Born around 1907-1909

2 younger daughters

Any help would be appreciated