Emir Gazi Gümüshtigin (died 1134) was the second ruler of the Danishmend

Danishmends

The Danishmend dynasty was a Turcoman dynasty that ruled in north-central and eastern Anatolia in the 11th and 12th centuries. The centered originally around Sivas, Tokat, and Niksar in central-northeastern Anatolia, they extended as far west as Ankara and Kastamonu for a time, and as far south as...

 state which his father Danishmend Gazi

Danishmend Gazi

Danishmend Gazi, full name Gümüştekin Danishmend Ahmed Gazi or Danishmend Taylu , was the founder of the Beylik of Danishmends...

 had founded in central-eastern Anatolia

Anatolia

Anatolia is a geographic and historical term denoting the westernmost protrusion of Asia, comprising the majority of the Republic of Turkey...

 after the Battle of Manzikert

Battle of Manzikert

The Battle of Manzikert , was fought between the Byzantine Empire and Seljuq Turks led by Alp Arslan on August 26, 1071 near Manzikert...

. He is sometimes called Emir Ghazi II.

He succeeded his father when the latter died in 1104. In 1130, he allied with Leo I, Prince of Armenia against the crusader Bohemond II of Antioch, who was killed in the subsequent battle; Bohemond's head was embalmed and sent to the Abbasid

Abbasid

The Abbasid Caliphate or, more simply, the Abbasids , was the third of the Islamic caliphates. It was ruled by the Abbasid dynasty of caliphs, who built their capital in Baghdad after overthrowing the Umayyad caliphate from all but the al-Andalus region....

 caliph

Caliph

The Caliph is the head of state in a Caliphate, and the title for the ruler of the Islamic Ummah, an Islamic community ruled by the Shari'ah. It is a transcribed version of the Arabic word   which means "successor" or "representative"...

 in Baghdad

Baghdad

Baghdad is the capital of Iraq, as well as the coterminous Baghdad Governorate. The population of Baghdad in 2011 is approximately 7,216,040...

. Gümüshtigin may have been able to conquer more territory in the Principality of Antioch

Principality of Antioch

The Principality of Antioch, including parts of modern-day Turkey and Syria, was one of the crusader states created during the First Crusade.-Foundation:...

 if not for the intervention of Byzantine emperor John II Comnenus, who wished to exert his own influence in Antioch.

In 1131 he besieged the castle of Kaysun

Kaysun

The Fortress of Kaysun is located near the town of Çakırhüyük in the Adıyaman Province of rural southeastern Turkey. The fortress was a stronghold of the crusader County of Edessa. In 1131, the Danishmend Gümüshtigin besieged the place. Joscelin I, Count of Edessa, hastened to relieve the...

 in the County of Edessa

County of Edessa

The County of Edessa was one of the Crusader states in the 12th century, based around Edessa, a city with an ancient history and an early tradition of Christianity....

, but retreated upon the arrival of Count Joscelin

Joscelin I, Count of Edessa

Joscelin of Courtenay , Prince of Galilee and Lord of Turbessel and Count of Edessa , ruled over the County of Edessa during its zenith, from 1118 to 1131...

, whom Gümüshtigin believed had already died.

Gümüshtigin died in 1134 and the Danishmend state began to collapse under pressure from the Byzantines and the Seljuk Sultanate of Rûm.