Born on 1226 Died on 30 Jul, 1286
Gregory Bar Hebraeus was a catholicos (bishop) of the Syriac Orthodox Church in the 13th century. He is noted for his works addressing philosophy, poetry, language, history, and theology; he has been called "one of the most learned and versatile men from the Syriac Orthodox Church" (Dr. William...
Died on 869
Ahmad ibn 'Abdallah Habash Hasib Marwazi was a Persian astronomer, geographer, and mathematician from Merv in Khorasan who described first time Trigonometric ratios: SIN ,COS, TAN & COT. He flourished in Baghdad, and died a centenarian after 869. He worked under the A...
Born on 1281 Died on 1349
Hamdollah Mostowfi was a Persian historian, geographer and epic poet. Mostowfi is the author of Nozhat ol-Gholub (نزهه القلوب), Zafar-Nameh (ظفرنامه), and the Tarikh e Gozideh (تاريخ گزيده). His tomb is a structure with a blue turquoise conical dome, at Qazvin.