Qabus

Qabus ibn Wushmagir (full name and honorific abol-ḥasan qābūs ben wušmagīr ibn ziyar šams al-maʿālī, ابوالحسن قابوس بن وشمگیر بن زیار, شمس المعالی; (r. 977–981; 997–1012, d. 1012) was the Ziyarid ruler of Gurgan and Tabaristan in medieval Iran. He was the son of Vushmgir and a daughter of the Bavandi Ispahbad Sharvin.