AVENTINUS (or JOHANN TURMAYR), author of the Annals of Bavaria, was born in the year 1466, at Abensperg. He studied first at Ingolstadt, and afterwards in the university of Paris. In 1503 he privately taught eloquence and poetry at Vienna, and in 1507 he publicly taught Greek at Cracow, in Poland. In 1509 he read lectures on some of Cicero's works at Ingolstadt, and in 1512 was appointed preceptor to Prince Ludwig and Prince Ernst, sons of Albert the Wise, Duke of Bavaria, and travelled with the latter of these princes. He afterwards undertook to write the Annales Boiorum, or Annals of Bavaria, being encouraged by the dukes of that name, who settled a pension upon him, and gave him hopes that they would defray the charges of the book. This work, which gained its author great reputation, was first published in 1554 by Hieronymus Ziegler, professor of poetry in the university of Ingolstadt; and afterwards at Basel, in 1580, by Nicholas Cisner. Besides his other writings, Gesner attributes to him a curious work, entitled Numerandi per digitos manusque Veterum Consuetudines. Aventinus died in 1534.