Augusto Ruspoli, 11th Duke of Fiano
Augusto Ruspoli- Ottoboni, dei Principi Ruspoli( Rome, September 8, 1880 – Rome, 1912), was an Italian aristocrat and son of Mario Ruspoli and Costanza Boncompagni- Ludovisi- Ottoboni.
Mario was the youngest son of Augusto Ruspoli, who was the youngest son of Alessandro Ruspoli, 4th Prince of Cerveteri.
And Costanza was daughter of Marco Boncompagni Ludovisi Ottoboni, 10th Duke of Fiano.
Augusto inherited the title of his maternal grandfather, becoming the 11th Duke of Fiano.
He was also Patrizio Romano, Noble of Viterbo and Orvieto and Prince of the Holy Roman Empire.
He died unmarried and without issue and was succeeded in the title by his cousin Cesare Ottoboni.
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.
Kraft, Prince of Hohenlohe-Langenburg
Kraft, 9th Prince of Hohenlohe- Langenburg( 25 June 1935 – 16 March 2004) was the eldest son of Gottfried, Prince of Hohenlohe- Langenburg.
He was the titular Prince of Hohenlohe- Langenburg from 1960 until his death.
Francesco Ruspoli, 3rd Prince of Cerveteri
Francesco, Prince Ruspoli, 3rd Prince of Cerveteri, 3rd Marquis of Riano, 8th Count of Vignanello( February 19, 1752 – March 8, 1829) was the 3rd Prince of Cerveteri, 3rd Marquis of Riano and 8th Count of Vignanello, son of Alessandro Ruspoli, 2nd Prince of Cerveteri and second wife and first cousin Prudenza dei Conti Marescotti- Capizucchi.
His uncle was Bartolomeo Ruspoli.
In 1792 he was created Prince of the Holy Roman Empire both he and his male descendants, by the Emperor Francis II.
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.
Francesco Ruspoli, 10th Prince of Cerveteri
Francesco, Principe Ruspoli( born 31 March 1967) is the 10th Principe di Cerveteri, 10th Marchese di Riano, 15th Conte di Vignanello and Prince of the Holy Roman Empire, son of Alessandro Ruspoli, 9th Prince of Cerveteri, and second wife Nancy de Girard de Charbonnières.
Prince Francesco Ruspoli studied in boarding school in the United Kingdom.
He then served in the Italian Army for a year before attending John Cabot University.
His career has been greatly influenced by his family history.
Francesco has worked in banking for over 20 years between Rome, Paris, and London and currently works for Banca Generali.
He is president of the Alumni Association for John Cabot University.
Vice- President of the Mascarade Opera Foundation.
Grand Chancellor of the Constantine Order of Saint George.
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.
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, 13th
Conte di Vignanello and Prince of the Holy Roman Empire, son of Alessandro Ruspoli, 7th Prince of Cerveteri and wife
Marianita 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 grandfather
was
Ippolito Lante Montefeltro della Rovere.
He later became a poet and fought in both world wars.
Giovanni Nepomucene Ruspoli, 5th Prince of Cerveteri
Giovanni Nepomucene, Principe Ruspoli( June 28, 1807 – November 6, 1876) was the 5th Principe di Cerveteri, 5th Marchese di Riano, 10th Conte di Vignanello, and Prince of the Holy Roman Empire son of Alessandro Ruspoli, 4th Prince of Cerveteri and wife Mariana Gräfin Esterházy de Galántha and ancestor of the Line I of the Principi Ruspoli.
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.

Question: What is the date of death of Alessandro Ruspoli, 9Th Prince Of Cerveteri's father?
Answer: 27 October 1989