Isabella Alfonsa di Borbone delle Due Sicilie was born 16 October 1904 in Madrid, Spain to Carlo di Borbone delle Due Sicilie (1870-1949) and María de las Mercedes de España (1880-1904) and died 18 July 1985 Madrid, Spain of unspecified causes. She married Jan Kanty Zamoyski h. Jelita (1900-1961) 3 September 1929 in Madrid, Spain.
Children
| Name | Birth | Death | Joined with |
| Karol Alfons Zamoyski (1930-1979) | 28 October 1930 Budapest, Hungary | 26 October 1979 Seville, Province of Seville, Andalusia, Spain | Esperanza Rey Luque (1935-) |
| Maria Krystyna Zamoyska (1932-1959) | 6 February 1932 Budapest, Hungary | 12 June 1959 Madrid, Spain | |
| Józef Michal Zamoyski (1935-) | 27 July 1935 Neuilly-sur-Seine, Hauts-de-Seine, Île-de-France, France | Maria Antonia Navarro y Gonzalez (1935-) | |
| Maria Teresa Zamoyska (1938-) | 18 July 1938 Bratislava, Slovakia | ||
Siblings
| Name | Birth | Death | Joined with |
| Alfonso di Borbone delle Due Sicilie (1901-1964) | 30 November 1901 Madrid, Spain | 3 February 1964 Vienna, Austria | Alice di Borbone-Parma (1917-2017) |
| Fernando di Borbone delle Due Sicilie (1903-1905) | 6 March 1903 Madrid, Spain | 4 August 1905 San Sebastián, Gipuzkoa, Basque Country, Spain | |
| Isabella Alfonsa di Borbone delle Due Sicilie (1904-1985) | 16 October 1904 Madrid, Spain | 18 July 1985 Madrid, Spain | Jan Kanty Zamoyski h. Jelita (1900-1961) |
| Name | Birth | Death | Joined with |
| Carlo di Borbone delle Due Sicilie (1908-1936) | 5 September 1908 Santander, Cantabria, Spain | 27 September 1936 Elgoibar, Gipuzkoa, Basque Country, Spain | |
| Maria de los Dolores di Borbone delle Due Sicilie (1909-1996) | 15 September 1909 Madrid, Poland | 11 May 1996 Madrid, Spain | August Czartoryski (1907-1946) Carlos Chias Osorio (1925-) |
| María Mercedes di Borbone delle Due Sicilie (1910-2000) | 23 December 1910 Madrid, Spain | 2 January 2000 Lanzarote, Canary Islands, Spain | Juan, Conde de Barcelona (1913-1993) |
| Maria de la Esperanza di Borbone delle Due Sicilie (1914-2005) | 14 June 1914 Madrid, Spain | 8 October 2005 Villamanrique de la Condesa, Province of Seville, Andalusia, Spain | Pedro de Alcântara de Orléans (1913-2007) |
Footnotes (including sources)
| ‡ General |
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