Historical Events in 1227 Jan 6 Ferrand of Portugal freed from the Louvre 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 GÄ…sawa Famous People Born in 1227 Sep 30 Pope Nicholas IV (d. 1292) World Leaders in 1227 Genghis KhanGreat Khan of the Mongol Empire Famous People Who Died in 1227 Genghis Khan( - 1227) More Famous Deaths 1226 History by Year 1228