You have nothing to lose. The worst of it will be you have made a connection in the immediate area.
Selo/village Monashi/Монаши currently has population of 862. I found neither Арнаут nor Арнаутob in village or connected to village. Write the village mayor and inquire if any property is still held by Arnautov Family. I do doubt it, but no one can stop you from asking. Maybe you can get some guidance, where to inquire regarding property once owned in village.