(also called Wasamegin) (1580?–1661), Native American chief of the Wampanoag in Massachusetts. Massasoit was the intertribal chief, or grand sachem, of the Wampanoag of Massachusetts and Rhode Island. From the early days after the arrival of the Pilgrims, Massasoit sought to develop peaceful relations. He became their steadfast friend and signed a peace treaty with the newcomers that was observed until Massasoit's death. He and other Wampanoag, including Squanto and Hobomok, taught the colonists planting techniques. The Pilgrims invited 90 Native Americans for their Thanksgiving feast in 1621. When Massasoit became sick in 1623, the Pilgrims nursed him back to health. Peace between the peoples lasted through his lifetime, but colonists took more Indian land, and the ensuing war of 1675, known as King Philip's War, was led by Massasoit's son. After Massasoit died in 1661 his second son, King Philip, also called Metacomet and Metacom, resisted English expansion, and convinced other tribes to join him. Massasoit's eldest son, Wamsutta, or Alexander, died in 1662. King Philip's War was devastating to the Wampanoag, nearly wiping them out