In the place of the modern village of Kolupanovo in the Tula region, there once stood a beautiful Holy Kazan Women's Monastery. It was known not only for its architecture but also for being home to the seer Euphrosinia, born Evdokia Grigoryevna Vyazemskaya. It is said that she had the gift of foresight and healed people with her prayers. In the memory of the residents of Tula, she remains known as a holy healer, although she was not truly so.

Euphrosinia came from the noble Vyazemsky family, graduated from the courses for noble maidens, and served as a lady-in-waiting at the court of Catherine II. At some point, she decided to dedicate herself to the church and staged her own death by drowning in a lake. After that, she wandered through monasteries for a long time until she settled in Kolupanovo. There, she led a modest life, kept dogs and cats in her hut, and slept with them on the floor, not caring about cleanliness. Contemporaries recalled that a terrible smell filled her home.

Euphrosinia prayed diligently every day, and soon her healing abilities manifested. She dug a well by the local river and advised the sick to take water from it for healing. There is a well-known case where she helped landowner Protopopova by suggesting an original method: the noblewoman was washed in a bath with a cauldron filled with horse manure. She treated other patients with herbs and even assisted in childbirth.

Euphrosinia accurately predicted the date of her death. She was buried under the floor of the refectory of the Kazan Church, and it is said that even after her death, her grave continued to heal people. In the 1930s, the grave fell into disrepair after a fire destroyed the church, and her holy spring was abandoned. In 1995, the monastery was restored, and the surrounding area was improved.