Eldiguzids

The Ildegizids, Eldiguzids (, ) or Ildenizids, also known as Atabegs of Azerbaijan ( "Atabakan-e Āzarbayjan", ) A historical state that ruled Azerbaijan, eastern Anatolia, northern Iraq, Iran and Jibali in 1136-1225. 
History.
The start of the dynasty is connected with Shamsaddin Eldaniz of Kipchak origin. Thus, Eldaniz, who took Arran as an iqta by Sultan Masud, soon spread his power throughout Azerbaijan.  After his son Arslanshah also ruled in 1160, Eldaniz seized power in the Seljuk sultanate of Iraq. During the reign of Shamsaddin Eldaniz, the lands covered Arran, Azerbaijan, Shirvan, Cibal, Hamadan, Gilan, Mazandaran, Isfahan, Rey, Mosul, Kirman, Persia, Khuzistan, Akhlat, Erzurum and Maragha.ere a Turkic dynasty of Kipchak origin. They controlled most of northwestern Persia, eastern Transcaucasia, including Arran, most of Azerbaijan, and Djibal. At their biggest, the land they had was about most of north-western and upper-central modern Iran, most of the regions of modern Azerbaijan and smaller portions in modern Armenia, Turkey and Iraq. 
The strengthening of the dynasty is connected with the period of Mohammad Jahan Pahlava.  After the death of Sultan Arslanshah in 1175, Jahan Pahlavan, who brought his 7-year-old son Togrul III to power, declared himself his ancestor and, like Shamsaddin Eldaniz, took de facto power. Atabey Jahan Pahlavan suppressed revolts against the central government and established friendly relations with the ruling dynasties in the neighborhood.  Since the period of Jahan Pahlava was a period of stability, cultural spheres developed in the lands under the rule of the Eldenizs.  During the reign of the mentioned Atabey, the capital of the Eldenizs was moved from Nakhchivan to Hamadan. 
Atabeg.
Atabeg means "father lord" in Turkic languages. It was the title given to the Turkic officers of Seljuq dynasty. Atabegs were not only vice-regents, but also de-facto rulers.