WereMaurice Elvey and Arthur Lubin both from the USA?
Maurice Elvey Maurice Elvey (11 November 1887 – 28 August 1967) was the most prolific film director in British history. He directed nearly 200 films between 1913 and 1957. During the silent film era he directed as many as twenty films per year. He also produced more than fifty films - his own as well as films directed by others.
Arthur Ludwich Arthur Ludwich (18 Mai 1840, Lyck in East Prussia – 12 November 1920, Königsberg) was a German classical philologist who specialized in Homeric studies. He is remembered for his observations involving the metric and prosody of Homer.