Tags: Monarch.
Ivan Asen III (Bulgarian: Иван Асен III also Йоан Асен III Ioan Asen III and in English John Asen III) ruled as emperor (tsar) of Bulgaria 1279–1280. Ivan Asen III was the son of Mitso Asen of Bulgaria and Maria of Bulgaria a daughter of Ivan Asen II of Bulgaria and Irene of Thessalonica.