He came into contact with the cathedral chapter at Cologne at an early age .
Eric was one of ten children of Duke John V of Saxe - Lauenburg and Dorothea of Brandenburg ( 1446 -- 1519 ) , daughter of the Elector Frederick II of Brandenburg .
Eric came into contact with the cathedral chapter at Cologne at an early age .
Eric was one of ten children of Duke John V of Saxe - Lauenburg and Dorothea of Brandenburg ( 1446 -- 1519 ) , daughter of the Elector Frederick II of Brandenburg .