Muhammad Hussain Naini
Grand Ayatollah Sheikh Mohammad-Hossein Naini Gharavi (Persian: محمد حسین نائینی غروی; May 25, 1860 – August 14, 1936) was an Iranian Shia marja'. His father Mirza Abdol Rahim and grandfather Haji Mirza Saeed, both one were Sheikhs of Nain and Mohammad Hussein proved himself the most competent student of Ayatollah Kazem Khorasani.