Where did Frederick II, a memeber of the House of Hohenstaufen, invite Jacob Anatoli?
Jacob Anatoli:  He was invited to Naples by Frederick II. Frederick II, Holy Roman Emperor: Frederick II (26 December 1194 – 13 December 1250; Sicilian: "Fidiricu II" , German: "Friedrich II" ) was a Holy Roman Emperor and King of Sicily in the Middle Ages, a member of the House of Hohenstaufen.
Naples