For much of history, royal weddings were carefully negotiated political alliances, designed to strengthen kingdoms, secure peace treaties, or produce heirs rather than satisfy matters of the heart. And even to this day, royals can't just marry whoever they want—personal happiness still takes a back seat to duty and diplomacy.
Yet every so often, a king, queen, or emperor ignores convention and follows their heart instead, sometimes changing the course of history in the process.
So, which romantic royals decided to risk it all and marry for love? Click on to find out.