Duke of Faial
Duke of Faial (in Portuguese Duque do Faial) is a Portuguese title of nobility granted by royal decree of Queen Maria II of Portugal, dated from April 4, 1833, to Dom Pedro de Sousa Holstein (1781–1850), a Portuguese politician during the first half of the 19th century. He was President of the Council of Ministers (Head of the Portuguese Government) and a remarkable Ambassador in London and to the Congress of Vienna.
When the Queen granted to Dom Pedro de Sousa Holstein the title of Duke of Faial, he was already 1st Count of Palmela (royal decree of 1812) and 1st Marquis of Palmela (royal decree of 1823). Due to his services to the Crown and Country, he obtained the ranking of Duke, as Duke of Faial.
Later a royal decree of the Queen, dated from October 18, 1850, changed his original title to Duke of Palmela.
List of the Dukes of Faial
”Nobreza de Portugal e do Brasil" – Vol. II, page 572. Published by Zairol Lda., Lisbon 1989.