Sid and Lilly, the protagonist's uncle and aunt, provide comic relief, while David McComber tries to prevent the protagonist from dating his daughter Muriel.  
This work is dedicated to a man who also "in peg-top trousers went the pace that kills along the road to ruin."  One of the characters quotes from Carlyle's French Revolution, and also makes a fuss about The Picture of Dorian Gray and Swinburne's Poems and Ballads.  A player piano grinds out "Bedelia" at the beginning of Act III, in which the protagonist offers a kiss to the prostitute Belle, but refuses to sleep with her.  Sid and Lilly, the protagonist's uncle and aunt, provide comic relief, while David McComber tries to prevent the protagonist from dating his daughter Muriel.  Taking place on July 4th and 5th, 1906, the play ends with Richard's realization that he was a fool to go with "fast women."  FTP, name this play which features Tommy and Arthur Miller, a nostalgically-titled comedy by Eugene O'Neill.
This work is dedicated to a man who also "in peg-top trousers went the pace that kills along the road to ruin."  
Ah! Wilderness