Example image of eyePlorer eyePlorer map for 'Adolf of Altena': List of bishops and archbishops of Cologne Neuss Altena Berg (state) Eberhard I, Count of Berg-Altena Canon (priest) Dean (Christianity) Provost (religion) Richard I of England Christmas Erbreichsplan Frederick II, Holy Roman Emperor Henry VI, Holy Roman Emperor Holy Roman Emperor Prince-elector Baptism Aachen House of Hohenstaufen King of the Romans Otto IV, Holy Roman Emperor Welf Pope Pope Innocent III Philip of Swabia Imperial crown Imperial Regalia Mainz Cathedral Episcopal see Engelbert II of Berg Adolf 1220 April 15