José Joaquín de Silva-Bazán y Sarmiento (3 December 1734 – 2 February 1802), 9th Marquis of Santa Cruz (1569) and Grandee of Spain, Knight of the Order of the Golden Fleece, was a Spanish aristocrat who served in the Royal House.

His parents were Pedro de Silva-Bazán y Alagón, 8th Marquis of Santa Cruz, Mayordomo of Prince Philip, Duke of Parma, and María Cayetana Sarmiento y Dávila.

[1] Three years later, back in Madrid, King Charles III appointed him his Mayordomo mayor, which made him the head of the court at the palace.

[1] A man of high culture and lover of the fine arts, he was for 30 years a patron and friend of the enlightened Canarian writer José de Viera y Clavijo, tutor to his children and whom he took on his travels through La Mancha and Europe.

[2] They visited Paris, Brussels, Italy and Central Europe, attending courses and conferences given by the most relevant scientists of the moment, on a wide variety of subjects.