User blog comment:Scrawland Scribblescratch/ANGLES AND FRANKS!/@comment-32656-20121227015522/@comment-32656-20121229040819

Good, because that makes far more sense, and is far easier.

Mary and Francis have a child, odds are very good that the Scottish nobles put her brother on the throne - with English backing. Given the two of them, however, I doubt any child lives long. If male, it becomes King. If female, Francis' brother likely takes the throne after his death.

Mary and Phillip, more prickly. My guess, the child becomes ruler of Spain, and revolts in England put Elizabeth - or another Protestant heir - on the throne. But I wouldn't expect such a child to live that long, either.