Station

Petrus Alphonsi (also known as Peter Alfonsi; born Moses Sephardi) was a Jewish Spanish physician, writer, astronomer, and polemicist, who converted to Christianity.

Born at an unknown date in the 11th century in Huesca, when the city still was part of al-Andalus (Islamic Spain), he embraced Christianity and was baptized at Huesca on St. Peter's Day, 29 June 1106. In honor of the saint Peter, and of his royal patron the Aragonese King Alfonso I and godfather he took the name of Petrus Alfonsi (Alfonso's Peter).