Original: April 9 & ndash ; Following the death of Pope Gregory XI and riots in Rome calling for a Roman pope , the cardinals , who are mostly French , elect Pope Urban VI ( Bartolomeo Prignano , Archbishop of Bari ) as the 202nd Pope .
Simplified: September 20 - Unhappy with Pope Urbans critical attitude towards them , the majority of the cardinals meet at Fondi and elect Clement VII as antipope and establish a rival papal court at Avignon .