Vishwanath Dev Gajapati was the king of Jeypore who established a kingdom in the region of southern Odisha and northern Andhra Pradesh.
[1] Vishwanath Dev was the son of Bhairav Dev of Nandapur, a feudatory of Prataprudra Deva who defended Kondapalli Fort against Krishna Deva Raya's invasion in 1516 CE and constructed a reservoir called Bhairava Sagar in Bobbili.
He shifted his capital to Rayagada for better economic prospects in trade and agriculture and built a mud fort.
[3][4] Vishwanath Dev consolidated his kingdom but by 1550 lost the regions between Krishna and Godavari to Qutb Shahi dynasty.
After his death in 1571, Ibrahim Qutb Shah invaded the kingdom and incorporated their territories into Golconda Sultanate.