Camillo Benso, Count of Cavour
Agenzia Stefani was founded with assistance from Camillo Benso, Count of Cavour, who was Prime Minister of the Kingdom of Piedmont-Sardinia. Along with the Count de Cavour, Guglielmo Stefani supported Italian unification efforts. The Kingdom of Italy (1861–1946) would be established in the same year that both Cavour and Stefani died. The Agenzia Stefani continued after Stefani's death, and was known as a propaganda tool of the ruling regime in Italy, including during the Fascist regime of Benito Mussolini.