The name Closter is of Dutch origin and first appears in a November 18, 1721 deed between the surviving Tappan Patentees and Peter Haring (who owned land in Harrington Park/Norwood east of Tappan Road and between Harrington and Blanche Avenues) - the meets and bounds of the deed begin “Beginning at the bridge which comes out of the Clooster by the Dwars Kill . . ." (At that time, Closter was considered part of New York State). In the Dutch language, "Klooster" or "clooster" means "a quiet place, a monastery or cloister."