Wikipedia
Kalapahad
Kalapahad or Kala Pahar (Black Mountain) was the title of a Muslim general of Mughal governor Sultan Sulaiman Karrani of Bengal. According to some historical documents he was Rajiv Lochan Ray, an Odia general of Gajapati Mukundadeva, the last emperor of the empire of Kalinga- Utkala, converted to Islam. After conversion to Islam he took a Muslim name but is popularly known as Kalapahad. He was instrumental in conquering parts of Odisha for the Afghans of Bengal. Bangladeshi scholar Ghulam Murshid has said that the figure of Kalapahad is largely fictional.