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In page Oliver De Lancey (American loyalist):

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Oliver De Lancey was a senior Loyalist officer, during the American Revolutionary War. De Lancey joined General Howe, on Staten Island, in 1776, and raised and equipped, the three battalions, with his brother, James, of DeLancey's Brigade, consisting of 1,500 loyalist volunteers from the Province of New York, and served as commanding officer on Long Island.