Sri Sri Yogiraj Swami Keshavananda Brahmachari (1830-1942) was an eminent Kriya Yogi and master of the Tantras from West Bengal . He was an important disciple of Sri Shyamacharan Lahiri who is popularly known as Lahiri Mahasaya and was well known for his austere Yogic practices through which he had attained the highest degree of enlightenment within his lifetime. He spent a significant part of his lifetime in the Himalayas while being engaged in Yogic practices.