High Quality Content by WIKIPEDIA articles! Pablo Alvaro (9th century) was a knight of Jewish ancestry from Córdoba, Spain who converted to Catholicism.In 840, Alvaro began a correspondence with the former Bishop Bodo, a Christian convert to Judaism, wherein each tried to convince the other to return to their old faith. Many of their letters have been preserved.The Jews (Hebrew: ), also known as the Jewish people, are a nation and ethnoreligious group originating in the Israelites or Hebrews of the Ancient Near East.