, Banū , an Iranian dynasty which reigned in the districts of Rūyān and Rustamdār, the coastal plain and the mountainous interior respectively, of the western parts of the Caspian province of Māzandarān [q.v.] in the second half of the 9th/15th century and in the 10th/16th century. The dynasty was in fact one of the two branches into which the ancient line of the Bādūspānids [q.v.], whose genealogy went back to Sāsānid times, split in the middle years of the 9th/15th century.
The Bādūspānids had been confined to the fortress of Nūr by the Caspian campaigns of Tīmūr in 794/139…