(Abū Yaʿqūb) Yūsuf b. Abū Kathīr Efrayim Ibn Yahboy

Document	Type	Relation	Date
Bodl. MS heb. d 75/19	Letter	Mentioned	1094–1097 CE
Halper 394	Letter	Mentioned	1094–97
T-S 13J23.10	Letter	Mentioned	1094–1097 CE