When was Petrus Alphonsi born?
Petrus Alphonsi
He was born at an unknown date and place in the 11th century
He was born at an unknown date and place in the 11th century in Spain, and educated in al-Andalus, or Islamic Spain, largely the same as modern Andalucia.  As he describes himself, he was baptised at Huesca, capital of the Kingdom of Aragon, on St. Peter's Day, 29 June 1106, when he was probably approaching middle age; this is the first clear date we have in his biography.[2] In honor of the saint Peter, and of his royal patron and godfather, the Aragonese King Alfonso I he took the name of Petrus Alfonsi (Alfonso's Peter).