Gadadhar Chattopadhyaya is the original name of Sri Ramakris

Ramakrishna Math and Ramakrishna Mission (RKM) is a spiritual and philanthropic organisation headquartered in Belur Math, West Bengal. The mission is named after the Indian Hindu spiritual guru and mystic Ramakrishna.The mission was founded by Ramakrishna's chief disciple Swami Vivekananda on 1 May 1897.The organisation mainly propagates the Hindu philosophy of Vedanta–Advaita Vedanta and four yogic ideals – Jnana, Bhakti, Karma, and Raja yoga. The mission bases its work on the principles of Karma Yoga, the principle of selfless work done with a dedication to God.