The name is Indo-European. Perkwunos is the reconstructed name of the god of thunder. Other gods said to have the same origin include Perkūnas (Lithuania), Pērkons (Latvia), Percunis (Prussia), Piarun (Belarus), Peko or Pekolasõ (Estonia), Parjanya (India), Fairguneis (Gothic), and Perun or Piorun (Bosnia, Bulgaria, Croatia, the Czech Republic, Poland, Russia, Ukraine, Serbia, Slovakia and Slovenia).