Jarilo

Jarilo (Cyrillic: Ярило, Ярила or Јарило) is a Slavic god of vegetation, fertility and springtime.
The only historical source that mentions Jarilo was from a German bishop who encountered pagans celebrating a festival called Gerovit (likely a German way of saying, "Jarovit"). Until the 19th century in Russia, Belarus and Serbia, folk festivals called "Jarilo" were celebrated in late spring. In these festivals, they worshiped a springtime god. Similar festivals occurred in Croatia and Slovenia.