Marquis of Viana

Marquis of Viana (in Portuguese "Marquês de Viana") was a Portuguese title of nobility granted on July 3, 1821, John VI of Portugal to D. João Manoel de Menezes, who already was 2nd Count of Viana, a son of Domingos Manoel de Noronha, 3rd Marquess of Tancos.
Bibliography.
"Nobreza de Portugal e Brasil" Vol III, pages 48/481. Published by Zairol, Lda., Lisbon, 1989.