However , his relation with Charles deteriorated when in 1350 Charles confirmed the Wittelsbach margrave Louis V as Elector of Brandenburg and Margrave of Lusatia .
Under his direction , the Mecklenburg lords John I and Albert II became Dukes and Imperial Princes .
His relation with Charles deteriorated when in 1350 Charles confirmed the Wittelsbach margrave Louis V as Elector of Brandenburg and Margrave of Lusatia .
Under his direction , the Mecklenburg lords John I and Albert II became Dukes and Imperial Princes .