Georg von Peuerbach was an Austrian astronomer, poet, mathematician and instrument maker, best known for his streamlined presentation of Ptolemaic astronomy in the Theoricae Novae Planetarum. Peuerbach was instrumental in making astronomy, mathematics and literature simple and accessible for Europeans during the Renaissance and beyond. June 8, 1423 – April 17, 1461; died at 37. Alive at the same time as Zheng He, Mehmed II, François Villon, Pius II, and Jan van Eyck. Wiki link