In The Taming of the Shrew, Christopher Sly is the character tricked into believing he is a lord.
The deception occurs in the Induction, the framing sequence before the main play begins. Sly, a drunken tinker, is found asleep by a wealthy lord after being removed from an alehouse. The lord orders his servants to dress Sly in fine clothes and convince him that he has been suffering from an illness and is actually a nobleman.
To reinforce the illusion, the servants tell Sly that he has a wife, though the supposed wife is a page dressed in women’s clothing. A troupe of actors then performs the story of Petruchio and Katherina for him, creating a play-within-a-play.
Christopher Sly is often confused with Petruchio because Petruchio is the main male figure in the central plot, but Petruchio is not tricked into thinking he is a lord. Tranio disguises himself as Lucentio, while Grumio is Petruchio’s servant. Sly’s framing story is notably left unfinished in the surviving text.