Mu'ayyad al-Dawla

Mu'ayyad al-Daula (d. 983) was the Buyid amir of Hamadan (976-983), Jibal (977-983), Tabaristan (980-983), and Gorgan (981-983). He was the third son of Rukn al-Daula.

As part of the settlement between Rukn al-Daula and his eldest son 'Adud al-Daula in early 976, Mu'ayyad al-Daula was to receive Hamadan upon his father's death, in exchange for recognizing 'Adud al-Daula as senior amir. Only a year later, Rukn al-Daula's second son Fakhr al-Daula, who ruled in Ray, rebelled against 'Adud al-Daula's authority. Mu'ayyad al-Daula mobilized in support of 'Adud al-Daula, forcing Fakhr al-Daula to flee to the Ziyarids of Gorgan and Tabaristan. This did not stop the two Buyids; 'Adud al-Daula took Gorgan in 980, while Mu'ayyad al-Daula gained control of Tabaristan in 981. Mu'ayyad al-Daula was entrusted with the newly-captured provinces as 'Adud al-Daula's subordinate.

'Adud al-Daula died in March of 983, and Mu'ayyad al-Daula followed him shortly afterwards. His vizier, Sahib ibn 'Abbad, summoned a gathering of the army and convinced its leaders to proclaim Fakhr al-Daula as his successor.

References

• R. N. Frye (1975). The Cambridge History of Iran, Volume Four: From the Arab Invasion to the Saljuqs. ISBN 0-521-20093-8

• Nagel, Tilman. Buyids, Encyclopaedia Iranica. http://www.iranica.com/articles/search/searchpdf.isc?ReqStrPDFPath=/home1/iranica/articles/v4_articles/buyids&OptStrLogFile=/home/iranica/public_html/logs/pdfdownload.html