Pope John XXI is the only Portuguese pope in history, elected in 1276 as Pedro Julião — a physician and philosopher who had taught at the University of Siena and whose medical treatise Thesaurus Pauperum circulated widely across medieval Europe. His pontificate lasted less than nine months; he died in May 1277 when the ceiling of his newly built private study at Viterbo collapsed on him while he slept.
The 2005 date places this issue within a broader INCM commemorative series revisiting Portuguese historical figures, timed loosely around national heritage programming rather than any specific Julião anniversary.
Pope John XXI is the only Portuguese pope in history, elected in 1276 as Pedro Julião — a physician and philosopher who had taught at the University of Siena and whose medical treatise Thesaurus Pauperum circulated widely across medieval Europe. His pontificate lasted less than nine months; he died in May 1277 when the ceiling of his newly built private study at Viterbo collapsed on him while he slept.
The 2005 date places this issue within a broader INCM commemorative series revisiting Portuguese historical figures, timed loosely around national heritage programming rather than any specific Julião anniversary.