Answer: ottoiv

AnswerCrossword Clue
OTTOIVEmperor under Pope Innocent III
OTTOIV13th-century Holy Roman Emperor
OTTOIVRoman emperor, 1209-15
OTTOIVHoly Roman emperor, 1209-'15
OTTOIVHoly Roman Emperor from the House of Welf
OTTOIVHoly Roman emperor
OTTOIVKing of Germany, 1208-15