Born at the Royal Alcazar of Madrid in Spain, she was the second daughter of  King Philip V of Spain and Princess Elisabeth Farnese.
Baptised María Teresa Antonia Rafaela she was an Infanta of Spain (infanta de España) by birth and was granted the style of address of Royal Highness.
She was known as María Teresa Rafaela though sometimes just Maria Teresa.

Prior to her marriage, the Spanish and French royal courts had been on poor terms: the Spanish had been greatly insulted by the French in 1725 when the engagement between Louis XV of France and Infanta Mariana Victoria of Spain, elder sister of Maria Teresa, was broken off.
Louis XV had instead married Marie Leszczyńska and by her fathered the Dauphin, Louis.
The marriage between the Infanta María Teresa Rafaela and the Dauphin was announced in August 1739 after the marriage of Princess Louise Élisabeth of France (sister of the dauphin) and Infante Felipe of Spain (brother of María Teresa Rafaela) the same month.
Under the influence of her mother Elisabeth Farnese, María Teresa Rafaela was not to go to France until she reached a more mature age.
Born at the Royal Alcazar of Madrid in Spain, she was the second daughter of  King Philip V of Spain and Princess Elisabeth Farnese. Baptised María Teresa Antonia Rafaela she was an Infanta of Spain (infanta de España) by birth and was granted the style of address of Royal Highness. She was known as María Teresa Rafaela though sometimes just Maria Teresa.
Prior to her marriage, the Spanish and French royal courts had been on poor terms: the Spanish had been greatly insulted by the French in 1725 when the engagement between Louis XV of France and Infanta Mariana Victoria of Spain, elder sister of Maria Teresa, was broken off. Louis XV had instead married Marie Leszczyńska and by her fathered the Dauphin, Louis. The marriage between the Infanta María Teresa Rafaela and the Dauphin was announced in August 1739 after the marriage of Princess Louise Élisabeth of France (sister of the dauphin) and Infante Felipe of Spain (brother of María Teresa Rafaela) the same month. Under the influence of her mother Elisabeth Farnese, María Teresa Rafaela was not to go to France until she reached a more mature age.
Maria Teresa Rafaela of Spain