Lancaster is a town in Worcester County, Massachusetts, in the United States. As of the 2010 census, the town population was 8,055.
Lancaster was first settled as "Nashaway" (after the local NashawayIndian tribe) in 1643. It was officially incorporated and renamed "Lancaster on the Nashua" in 1653. Until it was cut down due to safety concerns, Lancaster boasted the largest oak tree in the state, called the Beaman Oak, named after settler Gamaliel Beaman (1623–1677).Supporters of Lancaster's founder, John Prescott (1604–1681), wished to name the new settlement Prescottville, but the Massachusetts General Court considered such a request from a common freeman presumptuous, given that at that time, not even a governor had held the honor of naming a town after himself. Instead, they decided to use Lancaster, the name of his home town in England.