Luís Vaz Pereira Pinto Guedes, 2nd Viscount of Montalegre, was a Portuguese soldier, born 1770, who served on the absolutist side in Portugal's Liberal Wars. As the military commander in Trás-os-Montes in 1823, he raised a rebellion in the name of the absolutist prince, Infante Dom Miguel of Portugal. During the civil war between Dom Miguel and his elder brother, the former Emperor Dom Pedro I of Brazil, he was a prominent Miguelite general: he was in joint command of the Miguelite army at the Battle of Ponte Ferreira, and was the Miguelite commander at the Battle of Asseiceira in which Miguel's cause was finally defeated.