Mark Lenard in the 1940s as Thomas Becket in the
University of Michigan play, "Murder in the Cathedral",
by TS Eliot.

Mark Lenard as Sarek in Star Trek

Lenard is best remembered for his portrayal as Spock’s father Sarek in
Star Trek: The Original Series and Star Trek: The Animated Series and
later in Star Trek: The Next Generation. He also appeared in three Star
Trek feature films in 1984, 1986, and in 1991. Lenard played roles outside
the Star Trek series such as the prosecutor in Clint Eastwood’s 1968 film,
Hang ‘Em High.