Petrus Alfonsi
From Messianic Judaism Wiki
This article incorporates text from a public domain source: Bernstein, Aaron. Some Jewish Witnesses for Christ. London: Operative Jewish Converts' Institution, 1909.
Petrus Alfonsi (Moses Sephardi) was born at Huesca, Aragon, in 1062, and died in 1110. He was physician to King Alfonso VI. After his baptism he wrote a series of twelve dialogues between Moses and Pedro, i.e., between himself as a Jew and a Christian.