sentences:  Benthorn used to be a "heerlijkheid" (manor), owned by the States of Holland and West Friesland.It was sold to Adam Adriaan van der Duyn, lord of 's Gravemoer, in 1724.In 1812, Benthorn became a part of the municipality of Hazerswoude, but on 1 April 1817 it became a separate municipality again.