Related terms:
welf
swabia
saxony
conrad
lombard
henry v
antipope
cologne
bavaria
crusade
bishops
carinthia
holy land
frederick vi
barbarossa
third crusade
archbishop of mainz
henry ii of england
richard i of england
investiture controversy
holy roman empire
holy roman emperor
Wikipedia sources:
Frederick I, Holy Roman Emperor
Third Crusade
Otto I, Holy Roman Emperor
Henry IV, Holy Roman Emperor
Context for words:
duke
of
swabia
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