Guinan/Duffy/Jennings; Meath or Kings counties

Trying to find my elusive Guinans, possibly John or Joseph. He came to Richmond Quebec,early to mid 1800's, not sure if single or married, but can't find much in their archives or other Canadian records. Other than "from Ireland". Have found a couple of possibles, John marrying Catherine Jennings and a John marrying a Cathrine Morissette. Not able to find childdren of either marriage. Area of Rawdon Quebec keeps surfacing, dates can be possible, just don't want to force it. The only 'for sure' I have is son Michael (born in Quebec), married Bridget Duffy whose parents Richard and Mary McCabe (also 'from Ireland'). There may be another son, William. not sure if older or younger. Thank you.