Semargl

The Semargl or Simargl is is from East Slavic mythology, and is the God of physical fire (unlike Svarog who is God of celestial fire), and a hound said to bring about the end of times. Simargl can also refer to the mythical creature that is a winged hound.

An idol of the Simargl was presented in the pantheon of Great Prince Vladmir of Kiev. There are images of Simargls on bracelets from the 12th or 13th century.

Family
He is said to be the husband of Kupalnica (or Kupalnitsa), goddess of night, from whom he got two children: Kupalo and Kostroma.