María Del Rosario Cayetana Fitz-James Stuart Y Silva

• Cayetano Martínez de Irujo y Fitz-James Stuart, 13th Count of Salvatierra, born 4 April 1963 in Madrid. By his ex-wife, Genoveva Casanova, from Mexico, he has twin children. Cayetano married Genoveva Casanova y González (daughter of Kenneth Larry Casanova and his wife Mariana González y Reimann) in October 2005, after five years of relationship. The twins Luis and Amina were 4 years old at the time of their wedding.
- Luis Martínez de Irujo y Casanova (born 25 October 2001)
- Amina Martínez de Irujo y Casanova (born 25 October 2001)
• Eugenia Martínez de Irujo, 12th Duchess of Montoro, born 26 November 1968. On 23 October 1998, she married bullfighter Francisco Rivera Ordóñez of the Ordóñez bullfighting dynasty. The couple divorced in 2002.