Mariana Victoria of Spain was born on March 31, 1718, in Madrid, Spain. She was the daughter of King Philip V of Spain and Queen Elisabeth Farnese. Mariana Victoria became the first queen consort of Portugal when she married King Joseph I of Portugal in 1729. As queen consort, she played a significant role in the royal court and was known for her influence in political matters. Mariana Victoria had several children, but her marriage was often overshadowed by the political dynamics between Spain and Portugal. She passed away on January 2, 1781.