Bleda was the brother of which more famous Hun, in the 5th Century?
Attila Attila ( or ; fl. circa 406–453), frequently referred to as Attila the Hun, was the ruler of the Huns from 434 until his death in March 453. He was also the leader of a tribal empire consisting of Huns, Ostrogoths, and Alans among others, on the territory of Central and Eastern Europe.
Seong of Balhae Seong of Balhae, (died 794), sometimes called by his birth-name Dae Hwa-yeo, was the 5th ruler of the Balhae. He was the grandson of King Mun, his father being the deceased heir Dae Goeng-rim.