What sustained borrowing without third-party enforcement, in the early days of sovereign lending? Philip II of Spain accumulated towering debts while stopping all payments to his lenders four times. How could the sovereign borrow much and default often? We argue that bankers’ ability to cut...

Philip II of Spain accumulated debts equivalent to 60% of GDP. He also failed to honor them four times. We ask what allowed the sovereign to borrow much while defaulting often. Earlier work emphasized either banker irrationality or the importance of sanctions. Using new archival data, we show...