Qays 1 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | M VII |
| Dates | 674 (taq) / 673 (tpq) |
| PmbZ No. | 12 |
| Variant Names | Kaisos; Kais |
| Ethnicity | Arab |
| Textual Sources | Theophanes Confessor, Chronographia, ed. C. de Boor, 2 vols. (Leipzig, 1883-85, repr. Hildesheim/NewYork, 1980); tr. and comm. C. Mango and R. Scott, The Chronicle of Theophanes Confessor, Oxford 1997 (chronicle) |
Qays 1 was the father of Abdelas (`Abdullah 2): Theoph. AM 6166 (Ἀβδελᾶς, υἱὸς Κάϊς). One of the leaders of an Arab naval expedition mounted in 673/674 against Constantinople (the other leader was Muhammad 1); he wintered in Cilicia and Lycia: Theoph. AM 6164 (Κάϊσος δὲ εἰς Κιλικίαν καὶ Λυκίαν). See also Chaleb 1.
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