Bradford was the leader, the primary spokesperson, and the most famous chronicler of the Plymouth settlement. He was a member of the initial Separatist contingent that made the trip from England to the Netherlands, and from there to Massachusetts. Once the Pilgrims landed at Plymouth, he led the way in establishing relations with Massasoit, the leader of the Wampanoag that inhabited the region. The alliance between the Wampanoag and Plymouth was a crucial factor in securing the colony's survival. He soon became governor of Plymouth Plantation, and served in that position from 1621 to his death in 1657. His actions while governor helped to stablize the colony and develop it into a prosperous settlement. His famous account of the settlement, History Of Plimouth Plantation, is the most important primary source for the settlement and growth of Plymouth.