The term 'Founder of an Eastern Religion' can be answered with the 6-letter word 'BUDDHA'. BUDDHA was a spiritual teacher from ancient India who founded Buddhism, one of the world's major religions. He is believed to have lived and taught in the eastern part of the Indian subcontinent sometime between the 6th and 4th centuries BCE. His teachings, preserved in texts known as the Pali Canon, focus on understanding suffering and the way to end it.