I recommend reading the comments on that link. Some very interesting speculation there, including regarding the fathers of various well-known figureheads. I had never heard the Juan Carlos/William connection before. I pulled up searches:

Juan Carlos

and

Prince William

It certainly looks like it, dunnit? The long ski-ramp for a nose, and the angular eyebrows, like albatross wings. I always thought William just looked like his mum and not so much his dad...

Given two cuckoldy bastards, it would mean that Chucky is infertile, or perhaps there was some weird 'right of the lord' at play for a young nubile little wannabe queens and spreading the risk of proper Royalty via a little[ Droit du seigneur](https://en.wikipedia.org/wiki/Droit_du_seigneur#:~:text=Droit%20du%20seigneur%20('right,particularly%20on%20her%20wedding%20night.), organized by no other than our good friend Jimmy.

also known as jus primae noctis ('right of the first night') or prima nocta, which was a supposed legal right in medieval Europe, allowing feudal lords to have sexual relations with any female subject, particularly on her wedding night.

Mind you not all agree on the infertililty angle: Some point out that there are rumors of Chucky and Camilleya having a sprog.

LOLZ, so amusing, dabbling in a longitudinal Royal gossip column.