Marcus Jordanus
Marcus Jordanus (* ca. 1531 in Krempe; † 1595 in Krempe) was a Danish cartographer and mathematician. Jordanus studied at the University of Copenhagen, where in 1550 he was appointed Professor of Mathematics. Among other things, he gave lectures on geodesy and dealt with the geography of Ptolemy. In 1552, he published a map with the printer Hans Vingaard in Copenhagen.