Isaac I of Optina

Schema-archimandrite Isaac I of Optina (), or Ivan Ivanovich Antimonov before tonsure, was the superior of Optina Hermitage from 1862 to 1894. Elder Isaac is venerated as a saint in the Eastern Orthodox Church.

References

Further reading

• Belovidov, Agapitus (1995). Life of the Elder of Optina, Archimandrite Isaac Antimonov (in Russian). Optina Hermitage.