The Startsi of Optina Monastery are holy fathers Moses, Antony, Leonid(Lev), Macarius, Hilarion, Ambrose, Anatolius I, Isaac I, Joseph, Barsanuphius, Anatolius the Younger, Nectarius, Nikon the Confessor, and Hieromartyr Isaac the Younger. Hieromartyr Isaac was shot by the Bolsheviks on December 26 1937.
The holy Fathers made the Optina Hermitage (Pustyn) a focus for the powerful renewal movement that spread through the Church in Russia beginning early in the nineteenth century, and continuing up to (and even into) the atheist persecutions of the twentieth century. Saint Paisius Velichkovsky (November 15) was powerfully influential in bringing the almost-lost hesychastic tradition of Orthodox spirituality to Russia in the eighteenth century, and his labors found in Optina Monastery a 'headquarters' from which they spread throughout the Russian land.
The monastery itself had been in existence since at least the sixteenth century, but had fallen into decay through the anti-monastic policies of Catherine II and other modernizing rulers. Around 1790, Metropolitan Platon of Moscow undertook a mission to restore and revive the monastery in the tradition set forth by St Paisius. By the early 1800s the monastery (located about 80 miles from Moscow) had become a beacon of Orthodox spirituality, partly through their publication of Orthodox spiritual texts, but more importantly through the lineage of divinely-enlightened spiritual fathers (startsi, plural of starets) who served as guides to those, noble and peasant, who flocked to the monastery for their holy counsel.
The fathers aroused some controversy in their own day; a few critics (some of them from other monasteries) disapproved of their allowing the Jesus Prayer to become widely-known among the people, fearing that it would give rise to spiritual delusion (prelest). For a wonderful depiction of the deep influence of the Jesus Prayer on Russian life during this period, read the anonymously-written Way of a Pilgrim.
With the coming of the Russian Revolution in 1917, the monastery was of course officially shut down, but some of the Fathers were able to keep it running for a time as an 'agricultural legion'. Over the years, most of the Fathers were dispersed, to die in exile, in prison camps, or by the firing squad. Many of them are known to have continued to function as startsi to their spiritual children, despite great danger and hardship, for the remainder of their time on earth.
Commemoration of the Optina startsi was approved by the Synod of the Russian Church Abroad in 1990, and by the Moscow Patriarchate in 1996. The Optina Monastery itself was officially re-established in 1987.