BROCK, SIR ISAAC (1769-1812), British soldier and ad ministrator, was born at St. Peter Port, Guernsey, on Oct. 6, 1769. Joining the army at the age of 15 as an ensign of the 8th regiment, he became a lieutenant-colonel in 1797, after less than 13 years' service. From 1802 to 1805 he was with his regiment in Canada, returning thither in 1806 in view of the imminence of war between Great Britain and the United States. From Sept. 1806 till Aug. 1810 he was in charge of the garrison at Quebec ; in the latter year he assumed the command of the troops in Upper Canada, and then took over the civil administration of that province as pro visional lieutenant-governor. On the outbreak of the war of 1812 Brock had to defend Upper Canada against invasion by the United States. In the face of many difficulties and not a little disaffec tion, he organized the militia of the province, drove back the invaders, and on Aug. 16 1812, with about 73o men and 600 Indians commanded by their chief Tecumseh, compelled the American force of 2,500 men under General William Hull 1825) to surrender at Detroit, an achievement which gained him a knighthood of the Bath and the popular title of "the hero of Upper Canada." From Detroit he hurried to the Niagara fron tier, but on Oct. 13 was killed at the battle of Queenston Heights.
His Life and Correspondence by his nephew, Ferdinand Brock Tupper (2nd ed., 1847) , still remains the best ; later lives are by D. R. Read (Toronto, 1894), and by Lady Edgar (19o5).