Kupala
Jacob Grimm wrote a book called "Deutsche Mythologie" in 1835. In this book, he mentioned that Russians called their summer solstice bonfires "kupala". He also wrote that some people said "kupala" is the name of Kupulo. Kupulo is a god of harvest..Many experts say the word "kupala" means someone who takes a bath. The word comes from "kupat(i)". "Kupat(i)" means to take a bath. But not all experts agree. They say "kupala" is the name of a god. People believed in this god before Christianity came. They say it is not about John the Baptist.