|Clark Gable||Charles Stewart Parnell|
|Myrna Loy||Mrs. Katie O'Shea|
|Edna May Oliver||Aunt Ben Wood|
|Edmund Gwenn||Campbell, Parnell's Secretary|
|Alan Marshal||Captain William 'Willie' O'Shea|
|Donald Crisp||Michael Davitt|
|Billie Burke||Miss Clara Wood|
In 1880, Irish politician Charles Stewart Parnell returns home from a successful trip to America. Although jailed briefly for sedition, Parnell is cleared and stands in the House of Commons. He then supports the aspirations of Capt. William O'Shea, who although estranged from his wealthy wife, Katherine, asks her to assist him in befriending Parnell. When the militant-minded opposition tries to discredit Parnell, Katie stands by the politician.