[Brian Allen]

<< Well, their surname was actually Wettin or maybe Wipper ... >>

Battenberg, maybe?

[AnAmericanMother]

Battenberg, maybe?

No, the Battenbergs were from the next castle down the road - the descendants of a morganatic marriage of the Duke of Hesse-Darmstadt.

They jump in and out of the British royal family tree too, of course. Victoria's granddaughter married Louis of Battenberg. He changed his name to Mountbatten in all the foolishness surrounding German names in WWI, and Lord Mountbatten of Burma was one of their children.

[CatoRenasci]

Well, Battenberg would be Charles' proper last name. His father, Phillip "Mountbatten" is a Battenberg. The family changed its name during the Great War, as did the House of Saxe-Coburg-Gotha which became "Windsor". I think that Wettin and Wipper are the families that constituted the House of Hanover, i.e. the first four Georges, William IV and Victoria.