Liferoom in Great River, in SuffolkCounty

For centuries, clusters of the Algonquin people known as the Montaukett Indian Nation occupied the territory known as Secatogue, now the town of Islip. They lived in clusters located at West Islip (Secatogue), Bay Shore (Penataquit), Great River, and Oakdale (Connetquot).

On November 29, 1683, William Nicoll (Nicolls), founder of the Town of Islip and son of New York City Mayor Matthias Nicoll, was awarded the first royal patent to the east end of what is now the Town of Islip. Nicoll purchased land from Sachem (Paramount chief) Winnequaheagh of Connetquot. He named his 50,000-acre (20,000 ha) plantation (an 8-by-10-mile (13 by 16 km) tract of land) “Islip Grange”, in honor of his ancestral home of Islip (UK) in East Northamptonshire, England, from which Matthias emigrated in 1664. Nicoll’s domain extended from East Islip to Bayport and embraced the present-day communities of Sayville, West Sayville, Oakdale, Great River, Islip Terrace, Central Islip, Hauppauge, Holbrook, Bohemia, Brentwood, Holtsville, and a portion of Ronkonkoma. Nicoll paid an annual quit-rent (tax) to Thomas Dongan, 2nd Earl of Limerick and Governor of the Province of New York, of five bushels of good winter wheat or twenty-five (25) shillings payable annually on March 25.

Other early land patentees were Andrew Gibb (Islip hamlet), John Mowbray (Bay Shore, originally Awixa), Stephan Van Cortlandt (Sagtikos Manor), and Thomas Willets (West Islip).