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Hohenstaufen dynasty and rivals: Conrad III, 1138-52, Frederick I, 1152-90, Henry VI, 1190-97, Philip of Swabia, 1198-1208, antiking: Otto IV (Guelph), 1198-1208, Otto IV (king, 1208-12; emperor, 1209-15), 1208-15, Frederick II (king, 1212-20; emperor, 1220-50), 1212-50, Conrad IV, 1237-54, antiking: Henry Raspe, 1246-47, antiking: William, count of Holland, 1247-56 ...
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