Page "Mythology" Paragraph 34

* The Primary Chronicle ( Slavic mythos, 12th century ): Perun ( the creator of lightning and thunder ) and Veles oversee the 10th-century peace treaties between the Eastern Slavs and the Byzantine emperors ; Vladimir I of Kiev later introduces a pantheon of Perun, Hors, Dažbog, Stribog, Simargl, and Mokosh.

( Due to lack of firsthand sources, reconstruction of pre-Christian Slavic mythos is based on this and similar late works.