Question: Which English character actor in who appeared in British films during the 1940s, 1950s and 1960s starred in Mayerling?
Sentence (from "Mayerling (1968 film)"): Mayerling is a 1968 romantic tragedy film starring Omar Sharif, Catherine Deneuve, James Mason, Ava Gardner, Geneviève Page, James Robertson Justice and Andréa Parisy.
Relevant evidence: Yes