Abu Kalijar Marzuban, also known as Samsam al-Dawla (c. 963 – December 998) was the Buyid amir of Iraq (983–987), as well as Fars and Kerman (988 or 989 – 998). He was the second son of 'Adud al-Dawla. The Abbasids recognized his succession and conferred upon him the title Samsam al-Dawla. He lacked the qualities of his father 'Adud al-Dawla and failed to have a grip upon his state affairs. His rule was marked by revolts and civil wars.
Abu Kalijar Marzuban was born in 963, he was the son of Adud al-Dawla and Sayyida ibn Siyahgil, a daughter of Siyahgil, an Gilite ruler. Thus making Abu Kalijar Marzuban distantly related to Ziyarid dynasty, who were descended from a sister of the Gilite ruler Harusindan, who was the father of Siyahgil.
During 'Adud al-Dawla's lifetime, Abu Kalijar Marzuban was assigned the governorships of Buyid Oman and Khuzestan. Despite Marzuban's status as second son (Shirdil being the eldest), he was considered to be his father's heir. This issue was never completely clarified by 'Adud al-Dawla before his death, resulting in a succession crisis. Marzuban, who was in Baghdad when his father died, at first kept his death secret in order to ensure his succession. When he made the death of his father public, he took the title "Samsam al-Dawla".
Shirdil also laid his claims to the succession, and from his province of Kerman invaded and captured Fars. He took the title "Sharaf al-Dawla". Sharaf al-Dawla's invasion of Fars provided two more of Samsam al-Dawla's brothers, Taj al-Dawla and Diya' al-Dawla, to set up their own rule in Basra and Khuzestan. In Diyar Bakr, a Kurd named Badh ibn Hasanwaih took power and forced Samsam al-Dawla to confirm him as its ruler. To the north, Samsam al-Dawla's uncle Fakhr al-Dawla ruled an extensive territory from Ray. The rulers of Basra and Khuzestan soon acknowledged Fakhr al-Dawla as senior amir, making the latter the most powerful of the Buyids and moving the senior amirate from Iraq to Jibal.
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