The permanent Castilian tribunal at Granada was established in 1526.
Granada had become part of the Crown of Castile after the Nasrid surrender in 1492, making it a major new center of Christian rule and religious administration. The tribunal was established as the Inquisition organized its initially mobile operations into a smaller network of permanent courts.
Granada’s tribunal operated amid growing concern about the religious conformity of converts from Islam, later known as Moriscos. A 1526 decree allowed Granada’s Muslim population a period of instruction before harsher prosecution, but suspicion of concealed Islamic practice eventually became a major focus of inquisitorial activity.
The date is easy to mix up with other Castilian tribunals. Seville and Córdoba received permanent tribunals in 1482, Las Palmas in 1505, and Santiago de Compostela in 1574. Granada’s 1526 date therefore marks a specific institutional milestone, not the founding of the Spanish Inquisition as a whole.