Abdias Treu

Abdias Treu, sometimes spelled Trew, born in Ansbach on 29 July 1597 and dead on 12 April 1669, was a German mathematician, music theorist, vicar and academic, the son of a cantor and deputy headmaster. He attended grammar school at Heilbronn from 1611 to 1618, then studied mathematics, philosophy and theology at the University of Wittenberg on a scholarship from the Margrave of Brandenburg and took his master's degree in March 1621 after defending his thesis De vero et falso. After working as a vicar at Heidenheim and Markt Erlbach he became chancellor of the Latin school at Ansbach in 1625, and from 1636 to 1669 he was professor of mathematics and physical science at the University of Altdorf. He is best known for his contributions to astronomy, and his Janitor Lycaei musici of 1635 treated the devising of an accurate musical temperament in relation to the monochord.