Shelter Island History Museum
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    • 2026 Events & Programs >
      • Now through April 17
      • May 23-September 5: Havens Farmers' Market
      • May 30 Lost & Found
      • May 31 "Historic Homes" Presentation by Zachary Studenroth
      • Opens June 6 - "Havens House: Witness the American Revolution" exhibit
      • June 6: Shelter Island Historic House Tour
      • July 12 "Culper Spy Ring" Presentation by Bill Bleyer
      • July 13 - July 31: Summer Children's Theater Program
      • July 18 - "Red, White & Blue 250th Gala"
      • August 2 - "Battle of Long Island" Presentation by Noel Gish
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5.  “Heartsease”
By 1673, Capt. Nathaniel Sylvester had emerged as the sole owner of Shelter Island. The Sylvester family was involved in the Atlantic triangle trade and their ships carried rum and sugar cane between Shelter Island, England, and Barbados. They used the white oaks growing on Shelter Island to repair ships and make casks for the rum. Nathaniel Sylvester developed Sylvester Manor, his land was worked by enslaved Africans, indentured or paid Native Americans, and European laborers. The site is now known as Sylvester Manor Educational Farm.

Nathaniel Sylvester died in 1680, and in 1699, the Sylvester family sold  two parcels of their land: 3000 acres to the Nicoll  family (now Mashomack Preserve) and 1000 acres in the center of the island to George Havens of Conanicut Island, Rhode Island.
George Havens’ son, William, built this house in 1742;  William’s son, James, took over the house in 1761. James and his wife,  Elizabeth Bowditch Havens,  named their home “Heartsease”, and it quickly became the center of Shelter Island life. 

(Proceed to the room on your left.)

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  • Home
  • America's 250th Anniversary
    • 250 CLub
    • Suffolk County 250th Celebrations
  • About Us
    • Leadership
    • Partners
    • Our Timeline
    • Annual Reports
    • The Havens House >
      • Construction
      • Renovation
  • Support
    • Donate Now
    • Elizabeth Pedersen Educational Fund
    • Volunteer
  • Online Exhibits
    • History of Shelter Island
    • A Day in the Life
    • Digital Tapestry
    • "The Lords of Menantic" Companion Exhibit
    • "The Prospect of Summer" Companion Exhibit
    • See Their Names Exhibit
    • This Land is YOUR Land
    • The DNA of Shelter Island
    • Voices from the Vault
    • Then & Now
    • Witness the Manhansett
    • Walter Cole Brigham
    • Alan Shields
    • Helena Hernmarck
    • British Woolworks
    • "Connecting from a Quarantine Kitchen"
    • Havens DIMONscape
  • Havens Store
  • HAVENS FARMERS' MARKET
  • PROGRAMS AND EVENTS
  • Education
    • The Shelter Island History Project
    • Race, Ethnicity & Class on SI, 1652-2013
    • Gardiner Young Scholar's Program
  • Living History Project
  • The Collections
    • Digital Collections
    • New York Heritage Digital Collections
    • Donate to the Collections
    • Finding Aids
    • Film Collection
    • House/Building Registry Project
  • From Our Archives
    • The Soap, The Salesman And The Sailor
    • Historic Women of Shelter Island
    • A Deep Dive on Weakfish
    • The Homecoming of George Remington Havens II
    • The David Harries Young, Jr. Diaries
    • The "A. W." Steamer Trunk
    • Our Nation's 250th Anniversary
  • Calendar
    • 2026 Events & Programs >
      • Now through April 17
      • May 23-September 5: Havens Farmers' Market
      • May 30 Lost & Found
      • May 31 "Historic Homes" Presentation by Zachary Studenroth
      • Opens June 6 - "Havens House: Witness the American Revolution" exhibit
      • June 6: Shelter Island Historic House Tour
      • July 12 "Culper Spy Ring" Presentation by Bill Bleyer
      • July 13 - July 31: Summer Children's Theater Program
      • July 18 - "Red, White & Blue 250th Gala"
      • August 2 - "Battle of Long Island" Presentation by Noel Gish
  • Contact
  • Directors' Log In