The Prairie Wife 1925
as Doctor
Greed 1924
as Dr. Painless Potter (uncredited)
The Border Wireless 1918
as Frederick Schloss (as E. von Ritzen)
Intolerance: Love's Struggle Throughout the Ages 1916
as First Pharisee (Judean Story)
Old Heidelberg 1915
as Prince Rudolf (as Erik von Ritzau)
Credits from TMDB.