Marquess of Castellbell (Spanish: Marqués de Castellbell) is a hereditary title in the Peerage of Spain accompanied by the dignity of Grandee, granted in 1702 by Philip V to José de Amat, a Catalan nobleman who was Lord of Castellbell.[2][3]
The fourth child of the 1st Marquess, Manuel de Amat y Junyent, would become one of the most important men of his time, a prominent viceroy of Peru (1761-1776).
The 9th Marquess was a prominent actor and media figure in the latter half of twentieth century Spain. In 1945, he married Essylt Priscilla Scott-Ellis, a daughter of Thomas Scott-Ellis, 8th Baron Howard de Walden. She was a descendant of the 3rd Duke of Portland, who was Prime Minister of the United Kingdom between 1807 and 1809.
José de Amat y Planella, 1st Marquess of Castellbell (1670-1715)
José de Amat y Junyent, 2nd Marquess of Castellbell (1700-1770), eldest son of the 1st Marquess
Cayetano de Amat y Rocabertí, 3rd Marquess of Castellbell (d. 1794), third son of the 2nd Marquess
Manuel Cayetano de Amat y Peguera, 4th Marquess of Castellbell (1777-1846), only son of the 3rd Marquess
Cayetano María de Amat y Amat, 5th Marquess of Castellbell (1803-1869), eldest son of the 4th Marquess
Joaquín de Cárcer y Amat, 6th Marquess of Castellbell (1835-1923), son of Manuel de Amat y de Amat, second son of the 4th Marquess
María de los Dolores de Cárcer y de Ros, 7th Marchioness of Castellbell (1867-1939), granddaughter of María Escolástica de Amat y de Amat, eldest daughter of the 4th Marquess
Salvador de Vilallonga y de Cárcer, 8th Marquess of Castellbell (1891-1974), eldest son of the 7th Marchioness