By what nicknames was the elder brother of Matilda of Franconia called ?
Henry III, Holy Roman Emperor Henry III (28 October 1016 – 5 October 1056), called the Black or the Pious, was a member of the Salian Dynasty of Holy Roman Emperors. He was the eldest son of Conrad II of Germany and Gisela of Swabia. His father made him Duke of Bavaria (as Henry VI) in 1026, after the death of Duke Henry V.
Christian V, Count of Oldenburg Christian V, Count of Oldenburg (sometimes called "Christian VI";  1342 – after 6 April 1399) was the ruling count of Oldenburg from 1368 until 1398. He was born sometime before 1347 to Count Conrad I of Oldenburg and Ingeborg of Brunswick. After his father died in 1368, he ruled Oldenburg jointly with his elder brother Conrad II, and after Conrad II's deaths in 1386, with the latter's son, Maurice II.