In 1744 Louis XV negotiated a marriage between his fifteen year old son and the nineteen year old Infanta Maria Teresa Rafaela of Spain, daughter of King Philip V of Spain and Elisabeth Farnese. The marriage contract was signed 13 December 1744 and the marriage was celebrated by proxy at Madrid 18 December 1744 and in person at Versailles 23 February 1745. Louis and Maria Teresa Rafaela were well matched and had a real affection for each other. They had one daughter Princess Marie Thérèse who died before reaching adulthood and killed her mother. 