Althan(n), noble family from Bavaria/Upper Austria (Altheim), settled in Austria in 1531. The A. family split into various lines (Frain, Murstetten), and was given the title of Bohemian count in 1609 and the hereditary title of imperial count in 1610. Figured prominently among the court nobility during the 17th/18th centuries. Important personalities belonging to the A. family, which still exists, include: Count Michael Adolf Althan(n), Count Michael Johann Althan(n) and Count Gundacker Ludwig Althan(n).
Literature#W. Hauser, Das Geschlecht derer von A., doctoral thesis, Vienna 1949.