GHURIDS (or Āl-e ansab), a medieval Islamic dynasty of the eastern Iranian lands. They began as local chiefs in Ḡūr (q.v.) in the heartland of what is now Afghanistan, but became a major power from the mid-12th century until the opening years of the 7th/13th century. Ḡūr was then the nucleus of a vast but transient military empire which at times stretched from Gorgān (q.v.) in the west to northern India in the east, only to be overwhelmed by the Ḵᵛārazmāhs (q.v.; see also CHORASMIA ii) and to disappear, as far as the eastern Iranian lands were concerned, on the eve of the Mongol cataclysm.
The Ghurids came from the ansabānī family. The name of the eponym ansab/anasb probably derives from the Middle Persian name Winasp (Justi, Namenbuch, p. 282). After the Ghurids had achieved fame as military conquerors, obsequious courtiers and genealogists connected the family with the legendary Iranian past by tracing it back to Żaḥḥāk, whose descendants were supposed to have settled in Ḡūr after Ferēdūn had overthrown Żaḥḥāks thousand-year tyranny. The ansab family was then brought into the framework of Islamic history by the story that its chiefs received Islam from the hands of Imam ʿAlī, subsequently aiding Abū Moslem Ḵorāsānīs uprising against the Omayyads and having its power legitimized by being invested with Ḡūr by the caliph Hārūn al-Raīd (Jūzjānī, Ṭabaqāt I, pp. 318-27, tr. Raverty, I, pp. 300-16, citing a versified genealogy of the Ghurids compiled for Sultan ʿAlāʾ-al-Dīn Ḥosayn Jahānsūz by Faḵr-al-Dīn Mobārakāh b. Ḥosayn Marvrūdī, q.v.).
It goes without saying that we have no concrete evidence for any of this. The chiefs of Ḡūr only achieve firm historical mention in the early 5th/11th century with the Ghaznavid raids into their land, when Ḡūr was still a pagan enclave. Nor do we know anything about the ethnic stock of the Ḡūrīs in general and the ansabānīs in particular; we can only assume that they were eastern Iranian Tajiks.