barbarossa

from WordNet (r) 3.0 (2006)

Barbarossa
    n 1: Holy Roman Emperor from 1152 to 1190; conceded supremacy to
         the pope; drowned leading the Third Crusade (1123-1190)
         [syn: {Frederick I}, {Frederick Barbarossa}, {Barbarossa}]
    2: Barbary pirate (died in 1546) [syn: {Barbarossa}, {Khayr ad-
       Din}]

from Who Was Who: 5000 B. C. to Date

BARBAROSSA

Kaiser, the only emperor of Germany who ever went
to sleep.