Prudence Island
Coordinates: 41°37′01″N 71°18′59″W / 41.6170°N 71.3164°W
Prudence Island is the third largest island in Narragansett Bay in the U.S. state of Rhode Island and part of the town of Portsmouth. It is located near the geographical center of the bay. It is defined by the United States Census Bureau as Block Group 3, Census Tract 401.03 of Newport County, Rhode Island. As of the 2000 census the population was 88 people living on a land area of 14.43 km² (5.57 sq mi).
The Narragansett name for the island was "Chibachuweset" (or "Chibachuwese"), and the Narragansetts originally offered it for sale to John Oldham if he would settle there and set up a trading post. Oldham failed to meet the condition, so they sold the island to Roger Williams and John Winthrop in 1637, with each man retaining a one-half interest. Williams took the northern side of the island and Winthrop took the southern side. Division wall divides the two sides, and Pulpit Rock can still be found today on the northern side of the island.
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