a Persian prince and learned astronomer, was descended from the famous Tamerlane, and reigned at Samarcan about 40 years; after which he was murdered by his own son in 1449. His catalogue of the fixed stars, rectified for the year 1434, was published at Oxford by Mr Hyde, in 1665, with learned notes. Mr Hudson printed in the English Geography Ulug Beig's Tables of the Longitude and Latitude of Places; and Mr Greaves published, in Latin, his Astronomical Epochs, at London, in 1650. See Astronomy Index.