 The FDNY also maintains its Special Operations Command facility at 750 Main St. on the island.In 1637, Dutch Governor Wouter van Twiller purchased the island, then known as Hog Island, from the Canarsie Indians.After the English defeated the Dutch in 1666, Captain John Manning seized the island, which became known as Manning's Island, and twenty years later, Manning's son-in-law, Robert Blackwell, became the island's new owner and namesake.