Question: What is the date of death of Alessandro Ruspoli, 9Th Prince Of Cerveteri's father?

Knowledge 1: Alessandro Ruspoli, 9th Prince of Cerveteri
Alessandro "Dado", Principe Ruspoli (9 December 1924 – 11 January 2005) was an occasional actor and a playboy and eccentric aristocrat, the 9th Principe di Cerveteri, 9th Marchese di Riano, 14th Conte di Vignanello and Prince of the Holy Roman Empire.Dado descends from a brother of Cardinal Bartolomeo Ruspoli.Dado was born in Rome in 1924.His mother and father's first wife Claudia dei Conti Matarazzo, who died when he was 9, was heiress to one of the largest fortunes in Brazil.His father Francesco Ruspoli, 8th Prince of Cerveteri, later a poet, fought in both world wars.Dado became known for his extravagant lifestyle in the 1950s and 60s.He was friends with Brigitte Bardot, Salvador Dalí, Truman Capote, Roger Vadim, Roman Polanski, Emmanuelle Arsan and many others. [SEP] Knowledge 2: Francesco Ruspoli, 8th Prince of Cerveteri
Francesco, Principe Ruspoli (23 February 1899 – 27 October 1989) was the 8th Principe di Cerveteri, 8th Marchese di Riano, 13thConte di Vignanello and Prince of the Holy Roman Empire, son of Alessandro Ruspoli, 7th Prince of Cerveteri and wifeMarianita dei Duchi Lante Montefeltro della Rovere.His maternal grandmother was an American heiress from New York City, New York.His great-great-great-great-uncle was Bartolomeo Ruspoli and his great-great-great-great grandfatherwasIppolito Lante Montefeltro della Rovere.He later became a poet and fought in both world wars.
Knowledge 1: Alessandro Ruspoli, 4th Prince of Cerveteri
Alessandro, Principe Ruspoli( October 5, 1784 – October 31, 1842) was the 4th Prince of Cerveteri, 4th Marquis of Riano, 9th Count of Vignanello and Prince of the Holy Roman Empire, son of Francesco Ruspoli, 3rd Prince of Cerveteri and second wife HIH Leopoldina Gräfin von Khevenhüller- Metsch.He had for brothers, among others, Camillo Ruspoli, Duke of Sueca, and Bartolomeo Ruspoli and Khevenhüller- Metsch.His granduncle was Bartolomeo Ruspoli.Alessandro is the ancestor of the Line I of the Princes Ruspoli. [SEP] Knowledge 2: Camillo Ruspoli, Duke of Sueca
Camilo Ruspoli and Khevenhüller- Mestch, dei principi Ruspoli, Duke of Sueca and Prince of the Holy Roman Empire,( March 20, 1788 – July 30, 1864) was an Italian aristocrat, son -in- law of Manuel Godoy.He was born in Rome on March 20, 1788, the third son of Francesco Ruspoli, 3rd Prince of Cerveteri, and Countess Maria Leopoldina von Khevenhüller- Metsch.He had for brothers, among others, Alessandro Ruspoli, 4th Prince of Cerveteri, and Bartolomeo Ruspoli and Khevenhüller- Metsch.Camilo was by his own right a Roman prince.And by his marriage with Carlota Luisa de Godoy and Bourbon he showed the titles of Duke of Sueca, Count of Chinchón( both with greatness of Spain), Marquess of Boadilla del Monte and Count of Evoramonte( Portuguese), authorised by the Kings of Spain to use his wife's titles.He also was Chief of Squadron of the Dragoon Regiment of Pope Leo XII, Knight of Justice of the Order of St. John of Jerusalem," Maestrante" de Granada, Grand Cross of the Order of Charles III, Gentleman of the Chamber of the Emperor of Austria.Camillo is the ancestor of the Line II of the Princes Ruspoli.
Knowledge 1: Alessandro Ruspoli, 4th Prince of Cerveteri
Alessandro, Principe Ruspoli( October 5, 1784 – October 31, 1842) was the 4th Prince of Cerveteri, 4th Marquis of Riano, 9th Count of Vignanello and Prince of the Holy Roman Empire, son of Francesco Ruspoli, 3rd Prince of Cerveteri and second wife HIH Leopoldina Gräfin von Khevenhüller- Metsch.He had for brothers, among others, Camillo Ruspoli, Duke of Sueca, and Bartolomeo Ruspoli and Khevenhüller- Metsch.His granduncle was Bartolomeo Ruspoli.Alessandro is the ancestor of the Line I of the Princes Ruspoli. [SEP] Knowledge 2: Bartolomeo Ruspoli and Khevenhüller-Metsch
Bartolomeo Ruspoli and Khevenhüller- Metsch, dei principi Ruspoli( October 26, 1800 – 1872) was an Italian aristocrat, Prince of the Holy Roman Empire, son of Francesco Ruspoli, 3rd Prince of Cerveteri and second wife Leopoldina Countess von Khevenhüller- Metsch.He had four brothers, among others, Alessandro Ruspoli, 4th Prince of Cerveteri, and Camillo Ruspoli, Duke of Sueca.He was colonel of the Piedmontese army, in which he participates in the wars of the Italian resurgence.Paralyzed from below waist by the blast of a grenade, he continued to participate in wheelchair battles pushed by his assistant.Bartolomeo is the ancestor of the Line III of the Princes Ruspoli.His son Emanuele Ruspoli was named first prince of Poggio- Suasa after participating in the Italian unification and being the first Mayor of the Italian Rome.He was the grandfather of Donna Emanuella de Dampierre Ruspoli, Duchess of Segovia and Duchess of Anjou by her marriage to Infante Don Jaime, son of Alfonso XIII of Spain.Emanuele is the founder of the third Ruspoli line: The Princes of Poggio- Suasa.

Answer: 27 October 1989