Book excerpt: For Londoners of the eighteenth and nineteenth centuries, debt was a part of everyday life. But when your creditors lost their patience, you might be thrown into one of the capital’s most notorious jails: the Marshalsea Debtors’ Prison. In Mansions of Misery, acclaimed chronicler of the capital Jerry White introduces us to the Marshalsea’s unfortunate prisoners – rich and poor; men and women; spongers, fraudsters and innocents. We get to know the trumpeter John Grano who wined and dined with the prison governor and continued to compose music whilst other prisoners were tortured and starved to death. We meet the bare-knuckle fighter known as the Bold Smuggler, who fell on hard times after being beaten by the Chelsea Snob. And then there’s Joshua Reeve Lowe, who saved Queen Victoria from assassination in Hyde Park in 1820, but whose heroism couldn’t save him from the Marshalsea. Told through these extraordinary lives, Mansions of Misery gives us a fascinating and unforgettable cross-section of London life from the early 1700s to the 1840s.