As the title says. If the only child of Mary Queen of Scots had been born a girl instead, would she still be recognized as the legitimate monarch, or would her throne be usurped by some powerful Scotish noble? Would her chances of being chosen by Elizabeth I as her successor in England be the same as a male reignant monarch (as was James) or not? And if she becomes queen of Scotland, who could be a good choice of husband for her?