Andy Rooney, a naïve, mischievous Irish boy. Eventually, Andy inherits the estate and the title of his father and goes to Parliament.
Mrs. Rooney, his mother.
Oonah, a cousin of Andy whom he marries.
Squire Edward Egan of Merryvale Hall
Squire Edward Egan of Merryvale Hall, who hires Andy as a stable boy.
Mrs. Egan, his wife.
Murtough Murphy, an attorney and political boss.
Sir Timothy Trimmer
Sir Timothy Trimmer, the aging holder of a political office.
The Honorable Sackville Scatterbrain
The Honorable Sackville Scatterbrain, a candidate for Trimmer’s post.
Lord Scatterbrain, Sackville’s uncle, the secret father of Andy, who finally acknowledges him.
Squire O’Grady, of Neck-or-Nothing Hall, a supporter of Scatterbrain.
Gustavus O’Grady, his son and heir.
M’Garry, an apothecary who becomes involved in one of Andy’s mistakes and almost causes a duel.
Edward O’Connor, a poet and a brave gentleman. He fatally wounds Squire O’Grady in a duel.
Fanny Dawson, who is in love with O’Connor.
Major Dawson, Fanny’s father, who dislikes O’Connor.
Mr. Furlong, who is on O’Grady’s side. He is forced to marry Augusta.
Augusta, the daughter of Squire O’Grady, innocently involved with Furlong.
Larry Hogan, who tries to blackmail Squire Egan.
Father Phil, Andy’s confessor.
James Casey, who fails to turn up for his wedding.
Matty Dwyer, who is in love with Casey.
Jack Dwyer, her father, who will settle for Andy as a son-in-law.
Shan More, to whose cave the kidnapped Andy, disguised as Oonah, is taken.
Bridget, Shan’s sister, who takes Andy, disguised as Oonah, to bed with her. The next morning, lamenting her lost honor, she forces Andy to marry her. He is later freed by the discovery that she is already married to a convict. Thus, Andy at last can marry Oonah.