7th century in Greece

676-678 siege of the city by Slavs

Chatzon () or, in some modern Slavic studies, Hacon (Хацон), was a Slavic chieftain (έξαρχος Σκλαβίνων 'exarch of the Sclaveni' in the Greek sources) who, according to Book II of the Miracles of Saint Demetrius, led a coalition of Slavic tribes to attack the Byzantine city of Thessalonica in 615.

attack on the city by Slavs and Avars