Southeast Anatolia

It is generally accepted that the Marwanid Emirate was founded by al-Badh from the Humaydid tribe about the end of the AH 4 th / AD 10th century. Becoming a force in the region, al-Badh conquered first Erciş in east Anatolia, then Diyarbakır [Diyar Bakr], Nusaybin [Nisibin], Silvan and Mosul in 373 / 984 taking advantage of the decline of the Buyid [Buwayhid] influence. His attempt to conquer Baghdad failed, forcing him to withdraw from Mosul. Al-Badh died during his campaign to Mosul in 380 / 990. His successor and nephew al-Hasan bin Marwan ruled only briefly but managed to defeat the Hamdanids, thus increasing the power of his emirate. Mumahhid al-Dawla Sa'id ascended the throne in 387 / 997 but was deposed by his brother Nasr al-Dawla Ahmad in 1011.
The long rule of Nasr al-Dawla was the brightest period of the Marwanids. Good relations were established with the Byzantines and the Fatimids and numerous monuments were built, notably in Diyarbakır, Silvan, Nusaybin and Hasankeyf [Hısn Kayfa]. The death of Nasr al-Dawla in 463 / 1061 led to conflict in his state, which was soon divided between his sons Sa'id II and Nizam al-Dawla Nasr. The former ruled in and around Diyarbakır while the latter ruled in Silvan. Nizam al-Dawla Nasr captured Diyarbakır in 455 / 1063 but soon submitted to the sovereignty of the Great Seljuqs in 1071. His son Mansur became the last Marwanid amir in 471 / 1079. The Marwanid territory was annexed to the Great Seljuqs by Sultan Melikşah [Maliq Shah] in 1085.