Explanation:

 Rahmat Banu Begum was born as Ahom princess, and was the only daughter of Swargadeo Jayadhwaj Singha, king of Ahom Dynasty and his wife Pakhori Gabharu, the Tamuli Kuwari. Her real name was Ramani Gabharu, and was also known as Nangchen Gabharu and Maina Gabharu. She was the first wife of titular Mughal Emperor Muhammad Azam Shah the eldest son of the sixth Mughal emperor Aurangzeb