Thanks Sharon. I originally trained as a historian and now that I am virtually retired am turning those skills to these questions. Was the reference to Cliffon(e)y listed as George's place of birth? Or was it his place of residence when he travelled to NA. If the former, then I possibly have some interesting information for you. If it was his place of residence, then it may help with dating the departure from Corofin. Do you know anything about where he died in Ireland?
The entry in the 1911 census is confusing because the census taker misspelt the name as McWillin. Best,Kit