[wideawake]

A female heir from Spain could have spelled far more disastrous things for England than a divorce, don't you think?

How could his heir be from Spain if she was born in England.

[AnAmericanMother]

I think Alkhin is thinking of any potential offspring from the marriage of Mary (the sole surviving offspring of Catherine of Aragon) to Philip of Spain.

That WOULD have been messy. Fortunately or unfortunately, Mary was not able to conceive (she didn't marry til she was almost 40). Some have hypothesized that she was afflicted with congenital syphilis courtesy of her dear old dad.