[[Image:Amvrosiy.jpg|thumb|200px|Saint Ambrose of Optina]]
Notre vénérable père '''Ambroise d'Optina''' (en russe: преподобный Амвросий Оптинский; properly '''Aleksandr Mikhaylovich Grenkov''' - Александр Михайлович Гренков, [[5 décembre]], 1812, Bolshaya Lipovitsa settlement, Tambov guberniya—[[23 octobre]], 1891)
was a ''[[starets]]'' and a [[ celibacy| celibate]] [[schema]] priest (''iyeroskhimonakh''), [[ canonization| canonized]] in 1988 by the Local Council of the Russian Orthodox Church.
Aleksandr was born in the family of [[sexton]] Mikhail Fyodorovich Grenkov and Marfa Nikolayevna Grenkova. At the age of 12 Aleksandr entered the Tambov clerical school and later the Tambov theological seminary. Then he became a teacher in the Lipetsk clerical school and in 1839 entered the [[Vvedensk Monastery]] of the [[Optina Monastery]] in Kaluga guberniya. A few years later, he was [[ordination| ordained]] a [[ hierodeacon]], taking the name '' Ambrose'' in honor of Saint [[ Ambrose of Milan]]. Two years later Ambrose became a celibate monk. When Reverend Macarius died in September of 1860, Ambrose became a superior of the monastery.
died in the Shamordinskaya cloister and was buried in the Optina desert. His [[ relics]] were placed in the Vvedensk Monastery.