Films about political figures are fairly popular now but one wonders what made MGM think that a film about Irish politician Charles Stewart Parnell might be good box-office back in 1937. The answer was in the casting. This is a photo of Mr.Parnell.
So who did MGM decide to cast as Parnell. It is obvious that casting was done more with an eye on the box-office rather than on authenticity. Yep! it was super star Clark Gable. Reportedly Clark didn't like the project or the director (John Stahl) and things were not helped by his refusal to extend his facial hair beyond his famous moustache. The film, perhaps not unexpectedy, bombed.
Convincing ? I'll leave you to decide.