sandy island in mouth of Hudson River, said to have been called "Gull Island" by local Indians and "Oyster Island" by the Dutch, renamed "Gull Island" after the British took over, then "Gibbet Island" because pirates were hanged there. Sold to Samuel Ellis in 1785, who made it a picnic spot and gave it his name. Sold by his heirs in 1808 to New York State and acquired that year by the U.S. War Department for coastal defenses. Vacant after the American Civil War until the government opened an immigration station there in 1892 to replace Castle Island.