rior to European colonization, modern-day Boston was originally inhabited by the indigenous Massachusett. There were small Native communities throughout what became Boston, who likely moved between winter homes inland along the Charles River (called Quinobequin, meaning "meandering," by the Native people), where hunting was plentiful and summer homes along the coast where fishing and shellfish beds were plentiful. Through archeological excavations, one of the oldest Native fishweirs in New England was found on Boylston Street. Native people constructed it to trap fish several thousand years ago. Colonial Boston's early European settlers had first called the area Trimountaine (after its "three mountains", only traces of which remain today) but later renamed it Boston after Boston, Lincolnshire, England, the origin of several prominent colonists. The renaming on September 7, 1630 (Old Style), was by Puritan colonists from England who ha d moved over from Charlestown earlier that year in quest for fresh water. Their settlement was initially limited to the Shawmut Peninsula, at that time surrounded by the Massachusetts Bay and Charles River and connected to the mainland by a narrow isthmus. The peninsula is thought to have been inhabited as early as 4000 BC. In 1629, the Massachusetts Bay Colony's first governor John Winthrop led the signing of the Cambridge Agreement, a key founding document of the city. Puritan ethics and their focus on education influenced its early histo