Frederick III von Leibnitz
Friedrich von Leibnitz (died 30 March 1338), from a Salzburg ministerial family, was cathedral provost when elected Prince-Archbishop of Salzburg in 1315; he was consecrated at Avignon in 1316.
He allied Salzburg with Austria against Bavaria, and at the Battle of Mühldorf in 1322 Duke Frederick of Austria and many Salzburg knights were captured; Salzburg paid heavy reparations. In 1328 he issued Salzburg's first provincial ordinance and ruled until his death in 1338.