University of St Andrews - Ulugh Beg
A biographical account of Ulugh Beg, complete with additional references.
www-groups.dcs.st-andrews.ac.uk/~history/Mathematicians/Ulugh_Beg.html   reviews

Ulugh Beg and His Observatory.
Ulugh Beg was the oldest son of Shahrukh, born in the city of Sultaniyah during his grandfather Timur's (Tamerlane's) campaign in northern Iran in 1394.
faculty.washington.edu/dwaugh/CA/cities/samarkand/obser.html   reviews