Jan 6 Ferrand, Count of Flanders, freed from the Louvre after being held prisoner for 12 years by the French Mar 19 Count Ugolino of Segna elected Pope Gregory IX Sep 29 Pope Gregory IX excommunicate German emperor Frederik II Oct 4 Assassination of Caliph al-Adil. Nov 23 Polish Prince Leszek I the White is assassinated at an assembly of Polish dukes at Gąsawa 1226 Historical Events by Year 1228 Medieval Popes Gregory I Gregory XIII Julius II Julius III Leo X Pius V
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V