Ulrich Ewald Berthold Bettac (2 May 1897 – 20 April 1959), was an Austrian actor and theatre director. He was especially well known for his work as a character actor at the Burgtheater in Vienna; he also had a fairly extensive film career.
Walter Ruttmann (28 December 1887 – 15 July 1941) was a German cinematographer and film director, an important German abstract experimental film maker, along with Hans Richter, Viking Eggeling and Oskar Fischinger. He is best known for directing the semi-documentary 'city symphony' silent film, with orchestral score by Edmund Meisel, in 1927, Berlin: Symphony of a Metropolis. His audio montage Wochenende (Weekend) (1930) is considered a major contribution in the development of audio plays.
Roberto Rey (15 February 1905 – 30 May 1972) was a Chilean film actor who worked in Spain, appearing in more than fifty films during his career including the 1935 musical Paloma Fair.
Pedro Sienna (13 May 1893—20 March 1972) was a Chilean playwright, poet, journalist, art critic and theatre and movie actor who is also remembered as one of his country's pioneering directors in the early years of silent film.
He was married to Julia Benavides Hübler. They had three children: two were twins who died as toddlers, and Carmen Julia.
