There's been rumours about mistaken parentage for Simply Ages about all sorts and conditions of Royals*. None of them have ever been proved or disproved publicly (apart from the assorted claimants to be Anastasia). For my part, I'd say extraordinary claims need extraordinary proof, and that, in the case of Royals, saying nothing is not proof of anything more than an ingrained privacy reflex.

Let's wait to see what, if anything, the Left-Pondians have to say.

* Even one involving a warming pan.