Stephen Rogers was Quaker, the son of Abram Rogers and Ellen Hughes. Margaret MacGinnis was Protestant/C of E. I am guessing that Stephen would have been disowned and the marriage certainly would not have been a Quaker one.
Have you by any chance the names of the Church of England churches in Tecumseth and King at that time? Would I be able to check any records online? The marriage record might give her parents' names, I hope. I would be grateful for any suggestions.