Astronomer; lived at Perpignan in the middle of the fourteenth century. The name "Bongorn" or "Bonjorn" is the Proven�al equivalent of the Hebrew name "Yom-?ob," the Proven�al Jews often prefixing to their own names those of their fathers. Judah Mosconi, in his supercommentary on Ibn Ezra, mentions Bongoron as one of the greatest astronomers of that time. Steinschneider connects the name of Bongoron with that of 
, who was implicated in the divorce case of Bona Dona, daughter of En Astrug Caravida of Gerona, mentioned by Isaac de Lattes (Responsa, pp. 127-139) and by ?isdai Crescas ("Zikkaron Yehudah," p. 23b). Steinschneider further supposes that Bongoron is identical with the astrologer and philosopher David ben Yom-?ob ibn Bilia, father of the astronomer Jacob Poel.