John:
Welcome to Ireland Reaching Out!
As you saw from the 1901 census record, William was a herd and caretaker and he and Bridget were both born in Co. Tipperary. William and his family were not in Curralanty in 1911. I did find this family in the 1911 census and if it is the correct family then William died between 1901 and 1911.
http://www.census.nationalarchives.ie/pages/1911/King_s_Co_/Dunkerrin/B…
I did locate the civil marriage index record on Find My Past. The marriage was in the Roscrea registration district which actually covers a number of parishes in Tipperary and Offaly so I can't tell which county the marriage occurred and therefore I can't pinpoint the RC parish. The RC parish for Kilmurryely parish would be Shinrone.
Your next step would be to get a copy of the civil marriage record which would tell you the names of the fathers of the bride and groom and where the bride and groom were living in 1879. You get copies of the record from the General Register Office for around 4 euros. I can provide instructions if you want to get a copy.
Roger McDonnell
First name(s)WilliamLast nameCondrenRegistration year1879Registered Quarter/YearApr - Jun 1879Registration districtRoscreaVolume3Page423County-MarriageFinder™
William Condren married one of these people
Mary Groves, Anne Condrin, Bridget Smith, Anne Condron, Maria Collins