Prince Gabriele of Bourbon-Two Sicilies^{[citation needed]} (Gabriele Maria Giuseppe Carlo Ignazio Antonio Alfonso Pietro Giovanni Gerardo di Majella et Omni Sancti; 11 January 1897, Cannes, France^{[citation needed]} – 22 October 1975, Itu, Brazil,^{[citation needed]}) was a prince of the deposed dynasty which ruled the Kingdom of the Two Sicilies.^{[citation needed]}

Gabriel was the twelfth child and youngest son of Prince Alfonso, Count of Caserta, and his wife, Princess Maria Antonietta of Bourbon-Two Sicilies.^{[citation needed]} Nicknamed Onga within his family circle, he grew up having little contact with either of the two elder brothers, Carlo (1870-1949) and Ranieri (1883-1973), whose rival claims for headship of the family and its dynastic orders "would rend loyalties the House of Bourbon-Sicily asunder into the 21st century".^[1]

Gabriel married firstly Princess Malgorzata Izabella Czartoryska, daughter of Prince Adam Ludwik Czartoryski and his wife Countess Maria Ludwika Krasińska, on 25 August 1927 in Paris.^{[citation needed]} The couple had one child before Malgorzata died in Cannes on 8 March 1929:^{[citation needed]}

• Prince Antoine of Bourbon-Two Sicilies (born 20 January 1929 in Cannes – died 11 November 2019)

wed Duchess Elisabeth of Württemberg (born 2 February 1933 in Stuttgart; died 29 January 2022) on 18 July 1958 in Altshausen, and had issue:

• Prince Franz of Bourbon-Two Sicilies (born 20 June 1960 in Ravensburg)

wed Countess Alexandra of Schönborn-Wiesentheid (born 2 June 1967 in Zürich), on 2 June 2000 in Geneva, and had issue:

• Prince Antoine of Bourbon-Two Sicilies (born 6 June 2003 in Geneva)
• Princess Dorothée of Bourbon-Two Sicilies (born 10 May 2005 in Zürich)

• Princess Maria Carolina of Bourbon-Two Sicilies (born 18 July 1962 in Friedrichshafen)

wed Andreas Baumbach (born 30 April 1963 in Tübingen), on 6 May 1988 in Tübingen

• Prince Gennaro of Bourbon-Two Sicilies (born 27 January 1966 in Ravensburg)
• Princess Maria Annunziata of Bourbon-Two Sicilies (born 18 February 1973 in Friedrichshafen)

∞ Count Carl Fredrik Creutz (born 11 November 1971), on 2 August 2003 in Helsinki, and had issue.

Gabriel married, secondly, Princess Cecylia Lubomirska, daughter of Prince Kasimierz Lubomirski and his wife Countess Maria Theresia Granow-Wodicka, on 15 September 1932 in Kraków.^{[citation needed]} Gabriel and Cecylia had four children:^{[citation needed]}

• Prince Jean of Bourbon-Two Sicilies (born 30 June 1933 in Warsaw – died 25 December 2000 in Madrid)
• Princess Maria Margarita of Bourbon-Two Sicilies (born 16 November 1934 in Warsaw – died 15 January 2014 in Madrid)

wed Luis Gonzaga Maldonado y Gordon (born 17 November 1932 in Madrid), on 11 June 1962 in Jerez de la Frontera

• Princess Marie Immaculata of Bourbon-Two Sicilies (born 25 June 1937 in Warsaw – died 14 May 2020 in Mallorca)

wed Miguel García de Saéz y Tellecea (6 September 1921 – 12 March 1982), on 29 June 1970 in Sant Josep de sa Talaia; divorced in 1979

• Prince Casimir of Bourbon-Two Sicilies (born 8 November 1938 in Warsaw)

wed Princess Maria Cristina of Savoy-Aosta (12 September 1933 in Miramare - 18 November 2023 in Sao Paulo), on 29 January 1967 in Jacarezinho

• Prince Luís of Bourbon-Two Sicilies (born 28 November 1970 in Rio de Janeiro)

wed firstly, Christine Apovian (born 20 May 1969) on 22 October 1998 in São Paulo, subsequently divorced

• Anna Sophia di Borbone-Dos Sicilias (born 9 April 1999 in São Paulo)

wed secondly, Maria da Glória Ganem Rubião

• Maria Isabel di Borbone-Dos Sicilias (2012)
• Luisa Fernanda di Borbone-Dos Sicilias (2014)
• Paulo Afonso di Borbone-Dos Sicilias (2014)

• Princess Anna Cecilia of Bourbon-Two Sicilies (born 24 December 1971 in São Paulo)

wed Count Rodolphe de Causans (born 22 January 1973) civilly on 18 August 2005 in Les Verchers-sur-Layon, religiously on 19 September 2005 in Turin, and had issue.

• Princess Elena Sofia of Bourbon-Two Sicilies (born 10 September 1973 in São Paulo)
• Prince Alexander of Bourbon-Two Sicilies (born 9 August 1974 in São Paulo). Ordained a priest in Rome on 22 December 2007.