Sri Shirdi Sai Baba (18381918), the first one in the trinity of Sai Baba Avatars (incarnations), was the incarnation of Lord Shiva. He led the life of an ideal
Sri Sathya Sai Baba (1926-2011) was the second Sai Avatar(incarnation) in the Sai Trinity. Sri Shirdi Sai Baba (1838-1918) was the first one, and the third one