Which two Dominicans were appointed as the first Spanish inquisitors in 1480?

The first Spanish inquisitors appointed in 1480 were the Dominicans Miguel de Morillo and Juan de San Martín.

The Catholic Monarchs, Ferdinand II of Aragon and Isabella I of Castile, appointed the pair to act in the archdiocese of Seville. Their commissions were issued at Medina del Campo on 27 September 1480, two years after Pope Sixtus IV authorized the monarchs to establish the new tribunal.

Morillo and San Martín were sent to confront suspected religious nonconformity among converts from Judaism, often called conversos. The early tribunal was especially concerned with whether some converts were secretly continuing Jewish practices. They worked with Juan Ruiz de Medina, a secular cleric who served as their legal adviser or assessor.

The pair should not be confused with later leading figures such as Tomás de Torquemada, who became the first inquisitor general, or Pedro Arbués, a prominent inquisitor in Aragon. The first appointments were made before the Inquisition developed its broader network of tribunals across Spain.