In 1218–1220 Genoa was served by the Guelph "podestà" Rambertino Buvalelli, who probably introduced Occitan literature, which was soon to boast such troubadours as Jacme Grils, Lanfranc Cigala and Bonifaci Calvo, to the city. During this time, 1218–1219, a Genoese fleet under Simone Doria with the famous Genoese pirate Alamanno da Costa participated in the Siege of Damietta; about this period we must also remember the Genoese privateer and pirate, Henry, Count of Malta. The alliance between Byzantines and Genoese suffered after the Battle of Settepozzi, admirably described in the Annales ianuenses.