That puzzles me too, they were both born, married, lived and died in County Wexford, so they were relatively 'local' and would therefore be able to make use of the 'Parish', Margarets father also was listed as 'tramp' on her marriage certificate (although I have no more info on him) By the way the family were led to believe that Margaret came from a 'good' family and her parents were against her marrying John, as she would be marrying 'beneath' her!!!