The extant treatises on the astrolabe by the 6th century Greek scholar John Philoponus and by the 7th century Syriac scholar Severus Sebokht draw heavily on Theon's work.
Septimius Severus | Alexander Severus | Severus | Sulpicius Severus | Hans Severus Ziegler | Flavius Valerius Severus | Severus Sebokht | Severus Ibn al-Muqaffaʿ | Saint Severus |