The only available information for the author is given in the title of the work, where he is described as Fadlullah el-Kadî bi’t-Tebriz fi’l-Madî, i.e. Fadlullah, judge in Tebriz. Since Tebriz was briefly taken by the Ottomans twice in this period, i.e. for less than ten days in 1514 and for some months in 1534-35 (mid-July to spring: İ. H. Uzunçarşılı, Osmanlı tarihi, vol. 2, Ankara 1949, 338-340), he must have been some kind of temporary judge in the second period. However, we cannot exclude the possibility of a Safavi judge deserting to the Ottomans.