Louis VI the Roman (May 7, 1328 - May 17, 1365) was the first son of Emperor Louis IV the Bavarian from his second wife Margaret of Holland and a member of the House of Wittelsbach. Louis VI was Duke of Bavaria (1347-1365) and Margrave of Brandenburg (1351-1365). He also served as Prince-elector of Brandenburg since 1356. Louis was born at Rome when his parents travelled there for his father's coronation. Wikipedia
The definitive Wikipedia entry for Louis Vi The Roman. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Louis_VI_the_Roman