Gracious
Jenia is a diminutive form of Yevgeniya, the Russian feminine version of Eugene. It ultimately derives from the Greek name Eugenios, which means well-born, though in many Slavic contexts it is also associated with the meaning of Jane or Joanna.
Less common today
Jenia isn't in the latest US Top 1000. It last peaked at #6,726 in 2001.
Olympic gold medalist volleyball player
Russian singer-songwriter and member of Nouvelle Vague
US births per 5-year period, 1990βpresent (SSA data).