Miguel MarÃa Grau Seminario (Piura, July 27, 1834-Punta Angamos, Mejillones, October 8, 1879) was a Peruvian military and political sailor, and posthumous Grand Admiral of the Peruvian Navy. During the Pacific War, he commanded the Huáscar monitor and kept the Chilean squadron at bay for six months, finally succumbing heroically in the naval combat of Angamos, faced with far superior forces. He is considered the "maximum hero of Peru"