The Sagamore was a lesser chief than the Sachem. Roger Williams established Providence Plantations in 1636 on land provided by Narragansett sachem Canonicus. Gorton had purchased Shawomet from Miantonomi, the chief sachem of the Narragansett people. She was a direct descendant of Uncas and of Tamaquashad, Sachem of the Pequot tribe. They engaged Roger Williams to negotiate the terms of their purchase from Narragansett sachem Miantonomi. The village was named after Iyannough, a sachem of the Cummaquid tribe. They killed the Pequot "sachem" Sassacus who had come to them for refuge. Brant was a war chief, and not a hereditary Mohawk "sachem". Each tribe had seats in a group of 50 sachem chiefs. In 1815, Tammany Hall grand sachem John Ferguson defeated Dewitt Clinton and was elected mayor. They purchased the land "nine miles square" that became Norwich from Mohegan Sachem Uncas. Thereafter, the Mohegan became a separate tribal nation under the leadership of their "sachem" Uncas. Holbrook is within the Sachem School District. The Mohegan people associated with Sachem John Hamilton persist as an independent group today. Uncasville takes its name from Uncas, the 17th-century Mohegan sachem.