María Del Rosario Cayetana Fitz-James Stuart Y Silva

• 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.
- Cayetana Rivera y Martínez de Irujo (born 16 October 1999)
After becoming a widow, the Duchess remarried on 16 March 1978 to Jesús Aguirre y Ortiz de Zárate (1937–2001), a doctor of theology and a former Jesuit priest. The wedding caused shock; Aguirre was illegitimate, which was scandalous in 1970s Spain.