Abu Sa'id Taj ad-Dawla Tutush I (died 1095) was the Seljuq

Seljuq dynasty

The Seljuq ; were a Turco-Persian Sunni Muslim dynasty that ruled parts of Central Asia and the Middle East from the 11th to 14th centuries...

 ruler (probably sultan

Sultan

Sultan is a title with several historical meanings. Originally, it was an Arabic language abstract noun meaning "strength", "authority", "rulership", and "dictatorship", derived from the masdar سلطة , meaning "authority" or "power". Later, it came to be used as the title of certain rulers who...

 or emir

Emir

Emir , meaning "commander", "general", or "prince"; also transliterated as Amir, Aamir or Ameer) is a title of high office, used throughout the Muslim world...

) of Damascus

Damascus

Damascus , commonly known in Syria as Al Sham , and as the City of Jasmine , is the capital and the second largest city of Syria after Aleppo, both are part of the country's 14 governorates. In addition to being one of the oldest continuously inhabited cities in the world, Damascus is a major...

 from 1079 to 1095, succeeding Abaaq al-Khwarazmi

Abaaq al-Khwarazmi

Aziz ibn Abaaq al-Khwarazmi was a commander under Malik Shah I and later became the first Seljuk ruler to gain independence from the Great Seljuk Empire. He founded a state in Damascus in 1076, where he commenced the construction of the Citadel of Damascus. His successor was the brother of Malik...

. He finished the construction of the Citadel of Damascus, a project that had begun under the direction of Abaaq al Khwarizmi. Tutush took control of Syria

Syria

Syria , officially the Syrian Arab Republic , is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the West, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest....

 in 1085 from his brother, the sultan of the Great Seljuq Empire

Great Seljuq Empire

The Great Seljuq Empire was a medieval Persianate, Turko-Persian Sunni Muslim empire, originating from the Qynyq branch of Oghuz Turks. The Seljuq Empire controlled a vast area stretching from the Hindu Kush to eastern Anatolia and from Central Asia to the Persian Gulf...

 Malik Shah I

Malik Shah I

Jalāl al-Dawlah Malik-shāh was born in 1055, succeeded Alp Arslan as the Seljuq Sultan in 1072, and reigned until his death in 1092....

, but lost it in 1086, only to recapture it in 1094. After his death in 1095, his younger son Duqaq

Duqaq

Abu Nasr Shams al-Muluk Duqaq was the Seljuq ruler of Damascus from 1095 to 1104.Duqaq was a son of the Seljuq ruler of Syria, Tutush I, and Khatun Safwat al-Mulk, He was the brother of Radwan. When their father died in 1095, Radwan claimed Syria for himself, and Duqaq initially inherited...

 inherited Damascus, causing Duqaq's older brother Radwan to revolt, splitting their father's realm.