Bertius, Petrus

Born Flanders, died Paris Flemish mathematician, librarian, historian, geographer, and cosmographer to Louis XIII. Bertius was brother-in-law to both Jocodus Hondius and Pieter van den Keere, and collaborated with both. He wrote a geographical treatise in Latin published as the pocket atlas “Tabularum geographicarum contractarum…”, Amsterdam, published 1600 in Latin, French and German editions to 1650 with miniature maps engraved by J. Hondius and van den Keere. He also published an edition of Ptolemy’s “Geographia” as “Theatrum geographiae veteris” in 1618 and thereafter, with 28 maps by Mercator and 14 by Ortelius.