by Jim Young (guest)
8/30/2012, 11:52 AM
Three possible explanations it seems -
1.From the dialect word yesenia, meaning Autumn, osen' in standard Russian. In this case it is taken to be a name or nickname for a child born in Autumn.
2. A diminutive form of the male given name Evsevii (Greek Eusebius)
3. A diminutive form of the male given name Yesip a variant of Yosip or Yosif (Joseph).