Statistics for occurrence #1 of “Charles River” in chapter 3, page 76 of HISTORY OF THE TOWN OF MEDFORD, Middlesex County, Massachusetts, FROM ITS FIRST SETTLEMENT, IN 1630, TO THE PRESENT TIME, 1855.:

...was the seat of the great Sachem, who was much venerated by all the plantations of Indians. At Mistick was the seat of a Sagamore, near adjoining which is a great creek that meets with the mouth of Charles River , and so makes the haven of Boston. The records of Charlestown say: About the months of
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Entity Corpus Doc Corpus Doc  
Charles River (Maine, United States) 0 0 0 0 0 user votes
Charles River (Massachusetts, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.