Count Richard Nikolaus von Coudenhove-Kalergi, political writer and one of the pioneers of European unification, who in 1923 founded the Pan-European Movement in Vienna, which he headed until his death in 1972.
Portrait of Richard Coudenhove-Kalergi (1894–1972), black-and-white photograph, 1936, unknown photographer; source: Coudenhove-Kalergi, Richard: Europa ohne Elend: Ausgewählte Reden von R. N. Coudehove-Kalergi, Vienna 1936.