Peter of Spain

As the Latin Hispania was considered to include the entire Iberian Peninsula, he is traditionally and usually identified with the medieval Portuguese scholar and ecclesiastic Peter Juliani, who was elected Pope John XXI in 1276.

There are a large volume of manuscripts and printed editions of the Summulae Logicales, indicative of its great success throughout European universities well into the seventeenth century.

Peter of Hispania supported an investigation of teaching at the University of Paris which resulted in the Parisian bishop's Condemnation of 1277, which denounced Aristotelian propositions which conflicted with church doctrine.

[3] A Petrus Hispanus, usually identified as the same scholar,[5] was also credited as the author of a Commentary on Isaac, one of the foundational texts of clinical pharmacology.

A Pedro Hispano was also credited with the Treasury of The Poor (Thesaurus Pauperum), a comprehensive medical manual of diseases and remedies.