Radix
Alexandre Darracq (10 November 1855 – 1931) was a French investor, engineer, cycle manufacturer and automobile manufacturer. By 1904, Darracq was producing more than ten percent of all automobiles in France and he sold a substantial part of his business to British investors. He became fascinated by the possibilities of a rotary valve engine, put it into production and although it became a disaster for Darracq & Cie, persisted in installing it in Darracq products. He was obliged to retire in June 1912 aged 56. After the Armistice his name was dropped from his Suresnes factory's mass-produced products.
In 1906 he founded Società Anonima Italiana Darracq (S.A.I.D.) in Milan, Italy, which became [Società] Anonima Lombarda Fabbrica Automobili (A.L.F.A.) in 1910 and eventually Alfa Romeo.