History
Kalvis was one of the Dieva, the Slavic gods of Eastern Europe, born to Svarog and Lada.
Svarog attributed shares of his power to his sons, but Svantovit and Perun usurped their other brothers' share of powers to gain their father's favor, ultimately turning on each other, with Svarog refusing to involve himself.[1] Perun managed to obtain the largest share of power.[2]