The Uprising of Ivaylo ( ) was a rebellion Violence of the Bulgarian peasantry against the incompetent rule of Emperor Constantine Tikh and the Bulgarian nobility .

The peasants ' leader Ivaylo , said Communication to had been a swineherd by the contemporary Byzantine chroniclers , proved Coming_to_believe to be a successful general and charismatic leader .

Simultaneously , Michael VIII incited Preventing_or_letting the Mongols to attack Attack from the north , forcing Hostile_encounter Ivaylo to fight Hostile_encounter on two fronts .

Ivaylo was defeated Conquering by the Mongols and besieged Besieging in the important fortress of Drastar .

However , Ivaylo broke Destroying the siege Besieging and Ivan Asen III fled Escaping back to the Byzantine Empire .

Surrounded Surrounding by enemies and with diminishing support Supporting due to the constant warfare Hostile_encounter , Ivaylo fled Escaping to the court of the Mongol warlord Nogai Khan to seek aid Assistance , but was eventually murdered Killing .