Hohenstaufen wikipedia
European Heraldry :: Counts and Kings of Sicily 1071-1516
Conradin of Swabia and Frederick of Baden Being Informed of Their
Frederick II - World History Encyclopedia
754 years ago today in 1266 A.D, as - History Of the Hour
Manfred, King of Sicily - Wikipedia
For Gold And Blood - Warfare History Network
King Manfred of Sicily - Best of Sicily Magazine
Holy Roman Emperor Frederick II - 1211-1250