Marquis of Viana
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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.
- João Manoel de Menezes (1783–1831), 2nd Count of Viana;
- João Paulo Manoel de Menezes (1810–1890), 3rd Count of Viana.