By the turn of the 4th century the Odrysian kingdom showed its tendecy towards fragmentation. Two rulers are known by 405: Amadocus I and Seuthes II. The historian Diodorus Siculus even called both of them "kings of the Thracians", although this is most likely a misunderstanding: by 405 Seuthes II still considered Amadocus I as his suzerein. Amadocus was the son of the previous king Seuthes I, while Seuthes II was the son of a Thracian chieftain named Maisades. Maisades was a descendant of king Teres, making Seuthes II and Amadocus I distant relatives. There was also an autonomous Odrysian prince in the western hinterlands of Byzantium named Teres.