For Margaret, I've heard the name of John Turner thrown around. Yes
that John Turner. The thing is it raises some interesting questions. Turner is Catholic, but in all likelihood would convert to Anglican to marry Margaret. That's fairly easy to solve. Would Turner be given a title? He is Canadian, though born in England. Would Margaret move to Canada? Could Turner still pursue politics?
If he converted to Anglicanism I would presume that he would receive a title. Antony Armstrong-Jones received one after all - I see no reason why Turner wouldn't (The Nickle Resolution has always been... capriciously followed) also I believe that a John/Margaret marriage was likely to occur in the latter 1950s, which is when Diefenbaker was
this close to reviving knighthoods and titles anyway.
Now it would be interesting what the results of this would be. I don't know if Margaret would move to Canada, Turner's legal career and Bay Street careers could continue, but some may think it inappropriate for him to run for office. That said, I think he could, and the glamour could actually help his career.
Another possibility would perhaps be Turner moving to England and later becoming (or his wife becoming) Governor General at some point? That strikes me as possible, perhaps Countess Rossland, GG of Canada?
What do others think?