[crazy scenario]

"He was also a serving officer in the RN during WW2"

HE'S A GERMAN!!

Mountbatten is a direct Anglicisation of the German Battenberg (literally Batten Mountain), a small town in Hesse. The title of count of Battenberg, later prince of Battenberg, was granted to a morganatic branch of the House of Hesse-Darmstadt, itself a cadet branch of the House of Hesse, in the mid 19th century.

[dfwgator]

Didn’t the Mountbattens adopt him, I though Philip was Greek.

It’s so hard to keep up with these things.