Yeah essentially rather though is like when William becomes King Catherine won't become legally a Monarch at all, she'll be titled Queen Consort (I'm not sure if there's such a thing as King Consort but then really right now Philips not a big believer in protocol so he's never really wanted to be called anything other than Prince Philip, though I think he was born of the Royal families of Greece (being born in Corfu) and Denmark is why he's allowed to use that title, then the Duke of Edinburgh of course (just reading about Philip was made a prince in '57)
When Philip became a citizen and relinquished his citizenship anywhere else essentially he chose his maternal think his mother or grandmothers name Mountbatten, then now Charles and Anne use the name Windsor-Mountbatten.
Just a little tidbit here though lol the reason for the name England sometime in the 900s AD is actually the suppose possibly the Anglican name for Engaland which is Old English for land of the Angles were east of Saxon or Saxony (precisely is where Germany is now or least the very north of Germany) though not sure if the Angles were Germanic or which ever, as anywhere above say about the Midlands was known at the time prior as the Anglian Kingdom of Northumbria (split at one point into two areas with the southern part being called Deira its capital being York)
Campbell the name being rather in Scottish Gaelic Cam Beul meaning Crooked Mouth was a kind of nickname given to them by Clan Donald (likewise theirs being Domhnaill in Gaelic) meaning essentially sort of telling lies arch rival clans lol