First recorded as a given name of Latvians during 1825-1850. Ultimately from Ancient Greek Εἰρήνη (Eirḗnē, literally “peace”). Cognate to English Irene.
- A female given name.
- Klāvs Siliņš: Latviešu personvārdu vārdnīca. Riga "Zinātne" 1990, →ISBN
-  Population Register of Latvia: Irēna was the only given name of 7434 persons in Latvia on May 21st 2010.