Jelena vs Yelena

Jelena

name

  • A transliteration of the Russian female given name Еле́на (Jeléna), equivalent to Helen. 

  • The couple consisting of celebrities Justin Bieber and Selena Gomez. 

Yelena

name

  • A transliteration of the Russian female given name Еле́на (Jeléna), equivalent to Helen. 

How often have the words Jelena and Yelena occurred in a corpus of books? (source: Google Ngram Viewer )