What is the name of the prison where Mr. Micawber is held in 'David Copperfield'?

The prison where Mr. Micawber is held in David Copperfield is King's Bench Prison. He is imprisoned there for debt, a major problem in the financial plot surrounding the Micawber family.

King's Bench Prison was a real London debtors' prison. Debtors were often confined until they could satisfy their creditors or arrange another solution, although some prisoners with money or outside support could live in a designated area around the prison called the Rules. Dickens drew on this real institution to show both the humiliation and strange social world created by debt imprisonment.

Micawber's imprisonment is one of Dickens's best-known comic treatments of serious Victorian hardship. He remains optimistic and grandiloquent despite repeated financial disasters, famously expecting that “something will turn up.” Readers sometimes confuse his prison with the Marshalsea, where Dickens's own father was imprisoned and which influenced Little Dorrit. The Marshalsea is strongly associated with Dickens's life and fiction, but it is not Micawber's prison.