 Deucalion and Pyrrha were the only survivors after the great deluge.Their son Hellen, who became ruler of Phthia in southern Thessaly, was the patriarch of the Hellenes.Georg Mohr

Jørgen Mohr (Latinised "Georg(ius) Mohr"; 1 April 1640 – 26 January 1697) was a Danish mathematician, known for being the first to prove the Mohr–Mascheroni theorem, which states that any geometric construction which can be done with compass and straightedge can also be done with compasses alone.