Harsens Island is a wet
marshy location at the mouth of the
St. Clair River in the
U.S. state of
Michigan. Politically, the island is in
Clay Township of
St. Clair County. The Island was named for its first white settler, James (or Jacob) Harsen, a Dutchman, who came from
New York state in about 1779 with his son-in-law Isaac Graveraet (or Graveret). Harsen bought the island from the
Indians in 1783. It was also known as "Jacob Island" (also James or Jacobus Island) as late as 1809. The name of the post office, Sans Souci, was changed to "Harsens Island" in 1960.
See more at Wikipedia.org...