From the sixth to the ninth century, most commentaries on the Categories were written in Syriac.  These include commentaries by Paul the Persian (fl. 550), Sergius of Reš‘aina (d. 536), Aba of Kashkar (fl. c. 600), Silvanus of Qardu (early seventh century), Athanasius of Balad (d. 687), Jacob of Edessa (d. 708), George of the Arabs (d. 724), Theodore bar Koni (late eighth century), David bar Paul (fl. 785), Mošē bar Kēphā (d. 903), and by Hunayn ibn Ishāq.  The last Commentary, in turn, appears to be the source for the Arabic tradition (see King 2011).