Roger Williams (c. 1603 – between January and March 1683) was an English Puritan theologian who was an early proponent of religious freedom and the separation of church and state. He was expelled by the Puritan Leaders because they thought he was spreading "new and dangerous ideas", so in 1636, he began the colony of Providence Plantation, which provided a refuge for religious minorities. Williams was a member of the first Baptist church in America, the First Baptist Church of Providence.Williams was also a student of Native American languages, an early advocate for fair dealings with Native Americans, and arguably the first abolitionist in North America, having organized the first attempt to prohibit slavery in any of the British American colonies.