Luís Vaz Pereira Pinto Guedes, 2nd Viscount of Montalegre, was a Portuguese soldier, who served on the absolutist side in Portugal's Liberal Wars. He was born in Vila Real, on August 10, 1770, and became a member of the Royal Household ("moço-fidalgo") by a decree of December 20, 1778. He succeeded his father-in-law as 2nd Viscount of Montalegre by a royal decree of July 3, 1823. After the war ended, he was cashiered from the army in 1834. He wrote memoirs justifying his actions, and died in 1841.