Renato Caccioppoli (* January 20th 1904 in Naples, † May 8th 1959 Naples)
Born in Naples, Campania, he was the son of Giuseppe Caccioppoli (1852-1947), a surgeon, and his second wife Sofia Bakunin (1870-1956), daughter of the Russian revolutionary Mikhail Bakunin. After earning his diploma in 1921, he enrolled in the department of engineering, but in November, 1923 changed to mathematics. Immediately after earning his laurea, in 1925, he became the assistant of Mauro Picone, who in that year was called to the University of Naples, where he remained until 1932. Picone immediately discovered Caccioppoli's gifts and pointed him towards research in mathematical analysis. In the course of the next five years, Caccioppoli published about thirty works on topics developed in the complete autonomy provided by a ministerial award for mathematics in 1931, a competition he won at the age of 27, the chair of analisi-algebrica at the University of Padova. In 1934 he returned to Naples to accept the chair in group theory; later he took the chair of superior analysis, and from 1943 onwards, the chair in mathematical analysis.
In May 1938 Hitler was visiting Naples with Mussolini: Caccioppoli, who had already shown his opposition to fascism, convinced an open-air restaurant orchestra to play La Marseillaise, and made a speech against Italian and German dictators.
He was arrested and he should have been tried by a special political court instituted by the fascists against their opponents , but he managed -- with the help of his aunt Maria Bakunin who was a chemistry teacher at the University of Naples -- to be declared mad and was eventually sent to an asylum.