Poquōrūm, Anhōōke (Wampage I), Wawhāmkus, and Mehúmōw deeded to Thomas Pell 9,160 acres of land east of the Hutchinson River northward to Mamaroneck, including modern day Pelham, New Rochelle, The Pelham Islands, and portions of The Bronx. The parties signed a treaty under the Treaty Oak near Bartow-Pell Mansion in Pelham. New Netherland authorities did not recognize his title, accusing the New Englanders of continued encroachment upon Dutch territory. In September 1664, the British Navy, supported by a militia invasion force consisting largely of City Island colonists and led by Pell himself, entered New Amsterdam and forced Peter Stuyvesant, the Dutch Governor of New Netherland, to surrender. Merger and removal Following the 1654 treaty, the Siwanoys remained in the area around Westchester County for another hundred years, until they eventually "melted away" by intermarriage with the English settlers. 17th- to 18th-century history Some continued to reside along the shore in Westchester County until 1756, when most of the Wappinger and Mahicans remaining in the area joined the Nanticoke, then living under the protection of the Iroquois, and with them were eventually merged into the Lenape. Some of them joined the Stockbridge Indians, a Lenape people who were forcibly removed to Wisconsin in the 1830s. Descendants The Stockbridge Munsee Community is a federally recognized tribe based in Wisconsin. The Delaware Nation and Delaware Tribe of Indians are both federally recognized tribes in Oklahoma. New York, New Jersey, and Delaware have state-recognized tribes that identify as Lenape descendants. Notable Siwanoys Wampage I, Anhōōke (died ca. 1680), chieftain at Ann Hook's Neck and present-day Hunter Island Wampage II (Ninham-Wampage/Ann Hook), chieftain on present-day Hunter Island circa 1700 Ponus, chieftain at present-day Rye, New York, circa 1640; possible namesake of Poningo, the Siwanoy village located at Rye Shanarockwell (Shāwānórōckquot), chieftain at present-day Rye circa 1660 Cokenseko, chieftain circa 1680; namesake of Kensico, New York Wappaquewam, chieftain at present-day Mamaroneck, New York, in 1661 Mayn Mayano (Mianus), chieftain at present-day Greenwich, Connecticut circa 1640 Wascussee, chieftain at Shippan (present-day Davenport Neck) in 1640 Anna, daughter of Wampage II, who married Thomas Pell II, 3rd Lord of Pelham Manor (son of Sir John Pell) Notable Siwanoy descendants Claiborne Pell, U.S. Senator from Rhode Island; direct descendant of Wampage I Herbert Claiborne Pell IV, a candidate for Governor of Rhode Island; direct descendant of Wampage I Herbert Pell, U.S. Ambassador to Hungary and Portugal; direct descendant of