Fort Harrison, formerly Clearwater Harbor, Florida, was established on April 2, 1841, according to War Department records. Named in honor of President William Henry Harrison, ninth President of the United States, it stood at latitude 28 about thirty miles west of Fort Brooke on a pine bluff twenty five feet above sea level, fronting on a bay between two and three miles wide. During its occupancy, from two to seven companies of the Sixth U.S. Infantry were stationed there under Lieutenant Colonel Gustavus Loomis, and the greatest number of troops recorded at the fort was twenty officers and four hundred seventy six enlisted men in May 1841. Major William Hoffman, Captain A. Cady, Captain Gustavus Dorr, and Captain George Andrews were also stationed there at various times. The command moved to Fort Brooke about October 20, 1841, and Fort Harrison was abandoned about November 1, 1841. On May 2, 1931, Congressman Herbert J. Drane and Colonel Howard L. Anders of the War Department's Historical Section officially visited Clearwater, relocated the site of the long-demolished fort on the estate of Robert S. Brown, and authenticated it.