Louis XVI was 15 years old when he married Marie Antoinette. The marriage took place on May 16, 1770. At the time, Marie Antoinette was just 14 years old. This union was part of a political alliance between France and Austria, aimed at strengthening the ties between the two nations.
Marriages at such a young age were not uncommon among European royalty during that period. They were often arranged to secure political alliances and ensure the continuation of royal lineages. Despite their young age, Louis XVI and Marie Antoinette were expected to fulfill their roles as king and queen, which they did after Louis ascended to the throne in 1774.