Hi Glenda My Great Great Grandfather was also a William McCadden he was born and died in Rathmullan Co Donegal. His son My Grandfather Henry McCadden was also born in Rathmullan. He came to Belfast where my Father and his siblings were born. my Fathers cousin went Vancouver and married and settled there Other than that I don't know of amy Canadian connection. I myself was born in Belfast but have lived in Wales for the past 25 years, however I have some information on our side of the McCadden Clan mostly collected by my late cousin Edmond McCadden, if you think I can be of any help in your search drop me a line.