Point Frederick
A strategic location for the defence of the Loyalist settlement at Cataraqui (Kingston), this point was reserved in 1788 and named after Sir Frederick Haldimand, Governor of Quebec (1778-86). In 1790-91 a guardhouse and storehouse were built. By 1792 a dockyard was in operation and during the War of 1812 this vital naval base was fortified. On November 10, 1812, the Fort Frederick battery took part in repulsing an American naval squadron under Commodore Isaac Chauncey. This structure, one of four massive stone Martello towers built to strengthen Kingston's defences, was erected in 1846-47 during the Oregon boundary crisis between the United States and Britain. In 1852 the dockyard was closed and in 1870 Fort Frederick was abandoned.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.