A supporter of the Historical Right party, he took a moderate position which gained the respect of both Catholics and non-Catholics.
He was elected for Velletri to the Chamber of Deputies in March 1872 and remained there uninterruptedly until 1911, when he was appointed to the Upper House as a Senator of the Kingdom of Italy. He also served as the 8th Mayor of Rome from December 1890 to November 1892, and from March to July 1896 as Minister of Foreign Affairs of the Kingdom of Italy in the Government of Rudini II.
Italian Geographical Society
Caetani was elected president of the Italian Geographical Society in 1879 in succession to Cesare Correnti, the society's founder, who had been forced to resign for pursuing political objectives. He held the office until 1887, restoring the society's scientific objectives, promoting the teaching of geography in schools and organising the 3rd International Congress of Geography in Vienna in 1881.
Honours and awards
- Knight Grand Cordon of the Order of Saints Maurice and Lazarus
- Commander of the Order of the Crown of Italy
He died in Rome, Italy in 1917. In 1867, during his time in England, he had married Ada Bootle-Wilbraham, daughter of Edward Bootle-Wilbraham, 1st Earl of Lathom. Their children included the Islamist Leone Caetani (1869-1935), the composer Roffredo Caetani (1871-1961) and the diplomat Gelasio Caetani (1877-1934).
- (In Italian) "Caetani, Onorato, principe di Teano, poi duca di Sermoneta". Treccani. Retrieved 20 October 2018.
- This article contains material from the equivalent article on Italian Wikipedia
| Mayor of Rome
| Minister of Foreign Affairs of the Kingdom of Italy
Emilio, marquis Visconti-Venosta
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