From Medieval Latin Baioarii (“Bavarians”), from Late Latin Bojuvarii, literally, "Boii settlers", compound of Gaulish Boii (“the Boii tribe”) and Proto-Germanic *warjaz (“settler”) (compare Old Norse verjar (“defender, settler”)), from Proto-Indo-European (compare Welsh gwerin (“crowd”), Sanskrit [script?] (vṛndám, “group, troop, crowd”)). This name was adopted by the Marcomanni after defeating the Boii and settling Bohemia and parts of Bavaria.
- Count palatine of the Rhine and duke of upper Bavaria, had been purchased by betrothing them to two of Rudolph's daughters; so that Ottakar II.
- Duke of lower Bavaria from his side, Rudolph compelled the Bohemian king to cede the four provinces in November 1276.
- In 1650 he succeeded Ferdinand of Bavaria, archbishop of Cologne, as bishop of Munster.
- Otto was descended from Luitpold, duke of Bavaria and margrave of Carinthia, who was killed in 907 fighting the Hungarians.
- His son, Arnulf I., called the Bad, drove back the Hungarians, and was elected duke of Bavaria in 913.