The Real Name Of Swami Vivekananda Was Narendranath Datta. He Was Born On 12 January, 1863 In Kolkata In A Noble And Religious Bengali Family. He Completed His Studies From The Presidency College. He Was Not Only A Great Saint But Also A Patriot, An Orator, A Theoretician As Well As A Great Writer. On 4 July, 1902 He Passed Away While Doing Meditation.