In Russia and Poland, this is a female name. It's the feminine form of Leonidas (the male form in those countries is Leonid). In Poland, it has two name days. Please add feminine usage to the database.The most famous bearer is Leonida Bagration, wife of Grand Duke Vladimir Kirillovich of Russia: http://en.wikipedia.org/wiki/Princess_Leonida_Bagration_of_Mukhrani.
https://ro.wikipedia.org/wiki/Leonida_Brezeanu
https://ro.wikipedia.org/wiki/Leonida_Domide