AuthorSinclair, Thomas A.
SourceEncyclopaedia of Islam Online
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Adıyaman is a town in present-day southeastern Turkey, in the Euphrates basin south of and beneath the Taurus range, located on the site of the ancient settlement of Pordonnium (Lat.), which probably betrays a local name from which Adıyaman is also derived. In the ʿAbbāsid period, it was known as Ḥiṣn Manṣūr, one of the thughūr fortresses built by Hārūn al-Rashīd (r. 170–93/786–809), which replaced Perrhē as the principal local settlement, whose remains lie at Pirun, four kilometres to the north...