It's all right here:
How the Irish Saved Civilization
"After the fall of the Roman Empire, the Catholic Church survived intact in Ireland"
That's the revised history. Ireland and Scotland and to a great extent England followed Christianity for centuries after the fall of the Roman Empire, and the Catholicisation (control by the Pope and adoption of Catholic dates and practices) of the islands was resisted for well over a thousand years.
Patrick preached to the Irish celts in 405 and the conversion of Ireland began.
In 431 The Pope sent Palladius to convert the Irish to Catholicism and the Christians drove him out.
Patrick's statue shows him in priest's robes and a fish-mouth hat. That's Catholic revisionism, too.
Excellent thoughts.