Louis II, Margrave of Brandenburg

Louis VI (1328–1365) was called the Roman because he was born in Rome in 1328, while his father, Louis IV, was there to be crowned emperor. He became Duke of Upper Bavaria in 1347. Expecting the Polish crown through his marriage to Cunigunde, daughter of Casimir III, he yielded Holland and Hainaut to his brothers William and Albert in 1349.

In 1351 he took Brandenburg from his half-brother Louis V in exchange for sole rule of Upper Bavaria. There he faced the False Waldemar, an impostor backed by several cities and by Charles IV until the Wittelsbachs came to terms with the emperor. The Golden Bull of 1356 confirmed him as prince-elector.

Childless and at odds with his brother Stephen II over the Bavarian inheritance, he and Otto V promised Brandenburg to Charles IV in 1364. He died in Berlin in 1365.