Sunenphaa (reign 1744–1751), or Pramatta Singha (Assamese: স্বৰ্গদেউ প্ৰমত্ত সিংহ), was the king of Ahom Kingdom from 1744 – 1751 CE. He succeeded his elder brother Swargadeo Siva Singha, as the king of Ahom Kingdom. His reign of seven years was peaceful and prosperous. He constructed numerous buildings and temples. The most famous of his buildings was the Rang Ghar, which is also considered as the oldest Amphitheatre in Asia.
Pramatta Singha was the second son of SwargadeoRudra Singha. During the reign of his elder brother Swargadeo Siva Singha, he held the post of Charing Raja or the heir apparent to the throne. Most of the chronicles recorded that Swargadeo Rudra Singha expressed his desire at his death-bed that all his five sons Siva Singha, Pramatta Singha, Mohan Maladev Gohain alias Barjana Gohain, Rajeswar Singha and Lakshmi Singha successively became king, after him. Accordingly, after the death of Swargadeo Siba Singha, Chengmung Burhagohain of Pukhuriparia clan along with some other nobles decided to install Charing Raja as the king of Ahom kingdom.
Ugra Singha, the son of Swargadeo Siva Singha and Queen Ambika Devi, was holding the rank of Tipam Raja, when his father died. When the Prime minister Chengmung Burhagohain and Rupchandra Borbarua, along with some other nobles decided to place Charing Raja on the throne, a section of nobles decided to oppose their decision. The Kalugayan Borpatrogohain, the Dihingia Borgohain and the Dihingia Naobaicha Phukan took up the cause of Tipam Raja, and assembled the attendants and servitors employed in the interior of the royal household in one place, and made up their minds to install the Tipam Raja as king. After Swargadeo Siva Singha had died, the Tipam Raja left his feet and took his bath. He then armed his adherents with swords, shields, spears, arrows and bows, and asking them to remain ready for action he himself waited in full preparedness.