Wikipedia
Davaka
Davaka was kingdom of ancient India, located in current central region of Assam state. The only reference to it comes from the 4th century Allahabad pillar inscription of Samudragupta, where it is mentioned as one of five frontier kingdoms of the Gupta Empire. N K Bhattasali has identified it with Dabaka in modern Nagaon district, with the kingdom associated with the Kapili-Kallang river valley.