There is well documented evidence for Edward Neagles proselytising on Achill Island, County Mayo during the period of the famine. Yes he fed some people but there was a cost in pay in people being ostracised that continues in some part even today. Some people "jumped" and then "jumped" back to their original religion but carried a "stigma" that was passed down the generations. When I'm next in Ireland I will post the name of the book I read on the subject.