Srimanta Sankaradeva (1449–1568) was a major figure of the Bhakti movement in Northeast India. He founded the Ekasarana Dharma, a form of Vaishnavism focused on devotion to a single God, Krishna, primarily through collective prayer and singing (kirtan). He established monasteries (sattras) and composed numerous devotional songs, plays, and scriptures in Assamese and Brajavali, profoundly influencing the culture and religion of Assam and surrounding areas like Koch Bihar.