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'