His father was Greek, mother was German (Saxe-Coburg-Gotha). And before the Saxe-Coburg Gothas, the family was from Hanover. Not really much English blood in there. Throw in some Danes, some Saxe-Meiningen, some Mecklenburg-Strelitz, some Brunswick-Lüneburg-Celle....
Mostly Kraut.
The hair certainly looks SourKraut!
BTW, not much English blood in there?
Uh, English blood leads right back to...you guessed it...Angles and Saxons (and a drop of here and there, granted). Even the name is derived from the Angles.
https://en.wikipedia.org/wiki/English_people
WW I+II were mostly family squabbles...and you know how ugly those can get...