THE real life son of Dominic West, who is playing Prince Charles in The Crown, will play Prince William in the Netflix drama.
Senan West, 13, has been picked after a nationwide search for a suitable youngster to play the royal.
He’ll portray Prince William as he grows from a boy to man at the end of the fifth series, which is currently being filmed.
Senan is one of four children the actor has with his wife Catherine Fitzgerald.
His eldest child Martha, whom he had through another relationship with Polly Astor, is also an actor.
She starred in BBC period romance The Pursuit of Love earlier this year – which also starred Dominic, 52, who took over playing Prince Charles from Josh O’Connor.
It is understood the youngster auditioned for the role like other potential cast members, and submitted a tape via his agent.
The creators of the Netflix show, which returns next year, advertised for the plum role this autumn.
Senan is expected to portray the prince just as The Crown starts to grapple with one of the most difficult chapters in the royal family’s history.
It promises to be a challenging role as William has to cope with seeing his parents’ marriage crumble, his mother’s ill-fated Panorama interview and her subsequent death in a car crash in Paris in 1997.
His mother, previously played by Emma Corrin, will now be played by Elizabeth Debicki.
His grandmother, the Queen, will be portrayed by Imelda Staunton, who takes over the central role from Olivia Colman.
Dominic hit the headlines last year when he was spotted having a very intimate weekend with Lily James, who also starred with him on The Pursuit of Love.
