1) Character in the Mahabharata 2) Thai monarch 
[Langkasuka] Bhagadatta was a King of the Langkasuka empire who established contacts with China in 511. ...
(from the article `Assam`) ...Ancient Kmarpa included roughly the Brahmaputra valley, Bhutan, the Rangpur region (now in Bangladesh), and Koch Bihr, in West Bengal. King ...