Complex sentence: As brother of Isabella of Bavaria-Ingolstadt, wife of Charles VI of France, he spent several years in France, when he succeeded his father in 1413 he ordered to build the New Castle of Ingolstadt, which was strongly influenced by French Gothic.
Split into simpler sentences: As brother of Isabella of Bavaria-Ingolstadt, wife of Charles VI of France, he spent several years in France. When he succeeded his father in 1413 he ordered to build the New Castle of Ingolstadt, which was strongly influenced by French Gothic.