Teresa Gil de Vidaure (died on 15 July 1285) was the common law wife of King James I of Aragon, but never a queen.
[1] The king and Teresa Gil, who eventually married Sancho Pérez de Lodosa, carried on with their relationship throughout his marriage to Queen Violant.
[2] Teresa Gil was already widowed when the queen died in 1251, leaving the couple free to pursue their relationship openly and to enter a common law marriage not consecrated by the Roman Catholic Church.
In 1255, the king issued a charter granting Teresa Gil the tax-exempt castle of Jérica, to be inherited by their descendants, male or female, after her death.
[citation needed] Clement IV's successor, Pope Gregory X, allowed the case to be treated in Rome and confirmed his predecessor's decision.