Description
Setaukets - land at the mouth of the river or creek
This north shore chieftaincy occupied the territory from Stony Brook to Wading River and south to the center of the Island. They had a village at Setauket and others on the various necks of land in that vicinity on the north shore.
https://www.jeremynative.com/onthissite/wiki/the-tribes-of-long-island/