Afonso I of Portugal
Yahia Ben Bakr was of Jewish descent, the son of a Bakr Ben Yahia (not to confuse with Yahia Ben Bakr's son, also called Bakr Ben Yahia) and an ancestor of Yahia Ben Yahi III, a Sephardi Jew who was entrusted by King Afonso I of Portugal with the post of supervisor of tax collection and was nominated the first Chief-Rabbi of Portugal.