Chaitanya Mahaprabhu appeared as a devotee of Krishna in Mayapur, West Bengal, India in the late fifteenth century. He introduced sankirtan, widespread congregational chanting of the Supreme Person's names, as the most effective means by which anyone can achieve spiritual perfection. By His influence, many of India's leading religious scholars and their followers became devotees of Krishna themselves.
In His youth, Mahaprabhu started a Sanskrit academy in Navadvipa—one of India's top centers of learning at the time—and earned a reputation as an excellent scholar. But at age twenty-four he renounced everything to travel the subcontinent, encouraging everyone he met to chant the Hare Krishna mantra.
He is considered by disciples, scholars and followers to be the latest avatar of Krishna Himself, based on extensive evidence found in Vedic literature. The International Society for Krishna Consciousness, ISKCON, is a continuation of Chaitanya Mahaprabhu's sankirtan movement.
Image shows Chaitanya Mahaprabhu chanting in sankirtan with His associates.