Vincenzo Gioberti was an Italian Catholic priest, philosopher, publicist and politician who served as the Prime Minister of Sardinia from 1848 to 1849. He was a prominent spokesman for liberal Catholicism.

Giuseppe Mazzini was an Italian politician, journalist, and activist for the unification of Italy (Risorgimento) and spearhead of the Italian revolutionary movement. His efforts helped bring about the independent and unified Italy in place of the several separate states, many dominated by foreign powers, that existed until the 19th century. An Italian nationalist in the historical radical tradition and a proponent of a republicanism of social-democratic inspiration, Mazzini helped define the modern European movement for popular democracy in a republican state.