Duke of Faial

Duke of Faial (Portuguese: Duque do Faial) was a Portuguese title of nobility, named for Faial Island in the Azores, which was granted by royal decree of Queen Maria II of Portugal, dated from 4 April 1833, to Pedro de Sousa Holstein, a 19th-century politician who served as Portugal's first prime-minister.

Two months later, on 16 June, Sousa Holstein successfully petitioned the Queen to change the title from Duke of Faial to Duke of Palmela, which he used for the rest of his life.

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).

Later a royal decree of the Queen, dated from October 18, 1850, changed his original title to Duke of Palmela.

A notable example of Summer architecture, Chalet Faial was built nearby to Palmela Palace to serve as the summer estate of the Marquis of Faial, the heir to the Duke of Palmela.