E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Conquerors Nose (A).
A prominent straight nose, rising at the bridge. Charlemagne had such a nose, so had Henry the Fowler (Heinrich I. of Germany), Rudolf I. of Germany; Friedrich I. of Hohenzollern, famous for reducing to order his unruly barons by blowing up their castles (13821440); our own Iron Duke, Bismarck, the iron Chancellor of Prussia, etc.