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.

List of the Marquesses of Viana (1821)

João Manoel de Menezes (1783–1831), 2nd Count of Viana;
João Paulo Manoel de Menezes (1810–1890), 3rd Count of Viana;
João Luís Maria Berquó de Faria Manoel de Menezes (1910–1937), 4th Count of Viana, had no issue^{[citation needed]};
Luis José da Gama Berquó (1895–1984), had no issue^{[citation needed]};
Maria Isabel Manoel Berquó de Faria de Varennes de Mendonça (1927-), 5th Countess of Viana^{[citation needed]};
Nuno de Varennes Ramos Chaves Berquó (1957-), her mother transmitted him the title in her life^{[citation needed]};

"Nobreza de Portugal e Brasil" Vol III, pages 48/481. Published by Zairol, Lda., Lisbon, 1989.