Mark Lenard was born on October 15, 1924 in Chicago, Illinois, USA as Leonard Rosenson.
He was an actor, known for Star Trek IV: The Voyage Home (1986), Star Trek III: The Search for Spock (1984) and Star Trek VI: The Undiscovered Country (1991).
He was married to Ann Elizabeth Amouri. He died on November 22, 1996 in New York City, New York, USA.
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