There is a school of thought that believes Edward VIII chose Mrs Simpson precisely because of his aversion to doing the top job. Subconsciously, some think, the king chose a partner who could not be reconciled with the monarchy, in order that he might create a way out of it for himself. Perhaps in time people will be imposing that remote diagnosis on the Duke of Sussex. At some level, was Harry drawn to a woman whose nature would ultimately necessitate their joint escape from the institution?

Either way, a mere 83 years after the experiment was first tried, it is clearly much too soon to say whether marrying American divorcees generally works out well for the House of Windsor. I’m joking, of course. You need at least three instances of anything for it to officially become a trend.

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