Antoine, 13th Prince of Ligne
Antoine Maria Joachim Lamoral, Prince of Ligne, Prince of Épinoy, Prince of Amblise, Grandee of Spain (8 March 1925 – 21 August 2005) was the son of Eugène, 11th Prince of Ligne and Philippine de Noailles.
He died on 21 August 2005 in Château de Belœil, Belgium.
Prince Luiz Gastão of Orléans-Braganza
Prince Luiz Gastão of Orléans- Braganza( 19 February 19118 September 1931) was a member of the House of Orléans- Braganza, and was descended from the Brazilian Imperial Family.
Princess Maria di Grazia of Bourbon-Two Sicilies
Princess Maria di Grazia( Full Italian name:" Maria delle
Grazie Pia Chiara Anna Teresa Isabella Luitgarda Apollonia Agata Cecilia Filomena Antonia Lucia Cristina Caterina di Borbone")( 12 August 1878 – 20 June 1973) was a princess of Bourbon- Two Sicilies and princess of Orléans- Braganza through her marriage to Prince Luiz of Orléans- Braganza.
Prince Jacques, Duke of Orléans
Prince Jacques of Orléans, Duke of Orléans," fils de France"( Jacques Jean Jaroslaw Marie; born 25 June 1941 in Rabat, Morocco), is the son of Henri, Count of Paris( the Orléanist claimant to the French throne from 1940 until his death) and his wife, Princess Isabelle of Orléans- Braganza.
Prince Pedro Thiago of Orléans-Braganza
Prince Pedro Thiago of Orléans- Braganza( born 12 January 1979) is a member of the Brazilian Imperial Family.
Prince João Maria of Orléans-Braganza
Prince João Maria of Orléans- Braganza( 15 October 1916 – 26 June 2005) was a French- born Brazilian soldier, pilot and airline executive.
He was also a Prince of Orléans- Braganza and member of the Brazilian Imperial Family.
Princess Christine of Orléans-Braganza
Princess Christine of Orléans-Braganza (née "Princess Christine de Ligne"; born 11 August 1955 at Château de Belœil), is the daughter of Antoine, 13th Prince de Ligne and Princess Alix of Luxembourg.
She is the maternal granddaughter of Charlotte, Grand Duchess Regnant of Luxembourg and Prince Felix of Bourbon-Parma.
Her father was head of one of Belgium's foremost noble families, mediatized in 1803.
Her mother, Princess Alix (1929–2019), was the sister of former Grand Duke Jean.
Through her mother, Princess Christine is a descendant in the fifth generation of King John VI of Portugal and is a great-grand niece of Brazil's first emperor, Pedro I of Brazil.
Luiz Philippe of Orléans-Braganza
Luiz Philippe of Orléans- Braganza( born 3 April 1969) is a Brazilian politician, activist, businessman, and member of the imperial House of Orléans- Braganza.
He was elected Federal Deputy for São Paulo in the 2018 Brazilian elections for the Social Liberal Party with 118,457 votes.
Eudes of Orléans-Braganza
Eudes Maria Rainier Pedro José of Orléans- Braganza( born 8 June 1939 in Mandelieu, France) is a member of the Imperial House of Brazil.
He was the second child of Prince Pedro Henrique of Orléans- Braganza, then head of the Brazilian Imperial Family, and Princess Maria Elisabeth of Bavaria.
Princess Pia Maria of Orléans-Braganza
Princess Pia Maria of Orléans-Braganza (4 March 191324 October 2000) was a Princess and member of the House of Orléans-Braganza and the Brazilian Imperial Family.

Question: Who is Princess Christine Of Orléans-Braganza's paternal grandfather?