P.J. Denyer
Penultimate Amazing
Indeed, the Duke of Norfolk is also, iirc, Earl of Arundel as recorded in the coupletAs already addressed: Chucky wasn't any of "head of the country" or "head of the military" or "literally the head of the armed forces" at the time in question; the same "clan" has not "ruled for 800 years".
The regimental colonel of the Life Guards at the time in question was Major-General Lord Michael Fitzalan-Howard, the younger brother of the 17th Duke of Norfolk, a family of English aristocracy far older than upstart newcomers like the Saxe-Coburg Gothas.
FFS, our local robber baron descendants, the Percies (y'know, Harry Hotspur in several Shakespeare plays was one), not to mention others like the Nevilles and Tankervilles, have been around the English scene far, far longer than the Saxe-Coburg Gotha/Windsors or the Hanoverians.
Seriously, try learning some basics of history.
Since William rose & Harold fell
There has sat an Earl at Arundel.