María Del Rosario Cayetana Fitz-James Stuart Y Silva

- Luis Martínez de Irujo y Hohenlohe (born 26 May 1978)
- Javier Martínez de Irujo y Hohenlohe (born January 1981). He married sherry heiress Inés Domecq y Govente in 2008.
• Jacobo Martínez de Irujo y Fitz-James Stuart, 23rd Count of Siruela, born 15 July 1954 in Madrid. On 1 November 1980, he married María Eugenia Fernández de Castro y Fernández-Shaw (born 15 October 1954) but they later divorced. He married journalist, editor and writer Inka Martí Kiemann in April 2004.
- Jacobo Martínez de Irujo y Fernández de Castro (born 23 January 1981). He married Asela Perez Becerril on May 14, 2011. Co-owners of an art gallery.