Jacob Ziegler

Jacob Ziegler (c. 1470/71 – August 1549) was a humanist and theologian from Landau an der Isar in Bavaria.

[1][2] 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.

[2] The Swedish historian Johannes Messenius claimed that Ziegler served as a professor of mathematics at Uppsala University in 1540.