The humanist and theologian Jacob Ziegler (c. 1470/71 — August 1549) of Landau, was an itinerant scholar of geography and cartographer, who lived a wandering life in Europe. He studied at the University of Ingolstadt, then spent some time at the court of Pope Leo X before he converted to Protestantism; subsequently his geographical works were placed on the Index Librorum Prohibitorum.
For a time he taught at Vienna; in his old age, 1545–49, he lived in the house of Wolfgang Salm, Bishop of Passau. His portrait by Wolf Huber (c. 1485-1553), executed about 1540, when he was about seventy years old, is in the Kunsthistorisches Museum, Vienna.
- "Studenten und Professoren der Ingolstädter Universität"
- Image; Ludwig Benesch recognized the figure of Peter in Huber's Allegory of the cross as a portrait also of Ziegler. (Ludwig Baldass and Otto Benesch, "A Newly Discovered Portrait by Wolf Huber" The Burlington Magazine for Connoisseurs 40 No. 231 [June 1922], pp. 302-305).
- A full bibliography was compiled by Karl Schottenloher, Jacob Ziegler aus Landau an der Isar (Münster) 1910. A manuscript for the work, formerly in the collection of Sir Thomas Phillipps, in the University Library, Oslo, is discussed by Kristian Nissen, "Jacob Ziegler's Palestine Schondia Manuscript University Library, Oslo, MS. 917-4 degrees" Imago Mundi 13 (1956), pp. 45-52; see also "Finland as a separate peninsula with several place names".