Plymouth Colony was founded by a group of Puritan Separatists initially known as the Brownist Emigration, who came to be known as the Pilgrims. It was the second successful colony to be founded by the English in the United States after Jamestown in Virginia, and it was the first permanent English settlement in the New England region. The colony established a treaty with Wampanoag Chief Massasoit which helped to ensure its success; in this, they were aided by Squanto, a member of the Patuxet tribe. Plymouth played a central role in King Philip's War (1675–1678), one of several Indian Wars, but the colony was ultimately merged with the Massachusetts Bay Colony and other territories in 1691 to form the Province of Massachusetts Bay.