In Sanskrit, the ancient Indo-Euroean language of India, Swa means "self" or "own".
Swedish, like most European languages is descended from an ancient Indo-European tongue very similar to Sanskrit, and reading a brief history of Sweden recently, I was interested to discover that the "Swe" in Swede is thought to have come from an old Indo-European word meaning "us" or "our own" (people). It suggests that the ancient term for self could be used in a collective sense. Today the word 'self' refers to something entirely limited to the individual.