Petrus Hispanus, logicus, fl. 1220?–1250?
- Traditionally identified, but probably wrongly, with Petrus Hispanus the medical writer (q.v.), and with Petrus Juliani, the future Pope John XXI.
- J. F. Meirinhos in Medieval science, technology and medicine : an encyclopedia, ed. T. Glick et al. (2005)
The above references reflect only the current coverage of the online catalogue and may not be comprehensive.