Jeremy Spenser

Jeremy Spenser (born Jeremy John Dornhurst de Saram, 16 July 1937) is a British actor who made his screen debut aged 11 in Anna Karenina (1948).
The following year he played in the black comedy Kind Hearts and Coronets as the young Louis Mazzini. He played the young King Nicolas in The Prince and the Showgirl with Laurence Olivier and Marilyn Monroe, and in Ferry to Hong Kong with Orson Welles.
In the 1960s, the role offers began to slow down. His last film role was in 1966's Fahrenheit 451 directed by François Truffaut. A little later Spenser retired from acting.
He is the brother of British actor, director, producer and writer David Spenser.
[biography from Wikipedia]