Sebastian Roche joins 'Yellowstone' prequel '1923'
The actor is well-known for his roles in The Young Pope
The Man in the High Castle, and General Hospital
He retweeted news stories about his new job but made no comments
His 1923 recurring character has not yet been disclosed
Before Yellowstone but following the events of 1883 the western will take place
All of the programmes centre on the fictional Dutton family
Harrison Ford and Helen Mirren will be in the movie 1923
The historical drama is now in development , and its debut is scheduled for December
Sebastian Roche joins 'Yellowstone' prequel '1923'
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