Frederick III, Holy Roman Emperor
Since Louis invaded the imperial free cities of Dinkelsbühl and Donauwörth in 1458 he disputed with Frederick III, Holy Roman Emperor, until peace was made in Prague in 1463. In 1462 Louis defeated his enemy Albert III, Margrave of Brandenburg, who tried to extend his influence in Franconia in the battle of Giengen. Louis expelled all Jews who rejected baptism from his duchy.