29. In the year of our Lord 1032, Rudolf, king of Burgundy, died, and count Odo of Champagne, his sister's son, invaded the kingdom and had already seized many castles and towns, partly by treachery and partly by force. ... In this way he gained a large part of Burgundy, although the kingdom had been promised under oath a long time before by Rudolf to Conrad and his son, king Henry. But while Odo was doing this in Burgundy, emperor Conrad was engaged in a campaign against the Slavs.... 30. In the year of our Lord 1033, emperor Conrad, with his son, king Henry, celebrated Christmas at Strassburg. From there he invaded Burgundy by way of Solothurn, and at the monastery of Peterlingen on the day of the purification of the Virgin Mary [February 2] he was elected king of Burgundy by the higher and lower nobility, and was crowned on the same day. 32. Henry III and the Eastern Frontier, 1040 to 1043. Lambert of Hersfeld, Annals, M. G. SS. folio, V, pp. 152 f. The expansion of Germany to the east was slow and unstable. Poles, Bohemians, and Hungarians refused to remain tributary, but took every opportunity to rebel against the Germans. We give a few passages from Lambert's Annals to show that Henry III was aware of the policy bequeathed him by his predecessors, although he was not very successful in his efforts to carry it into effect. Anno 1040. King Henry [III] led an army into Bohemia, but suffered heavy losses. Among others, count Werner and the standard bearer of the monastery of Fulda were slain. Peter, king of Hungary, was expelled by his people. He fled to Henry and asked his aid. 1041. King Henry entered Bohemia a second time and compelled their duke, Bretislaw, to surrender. He made his territory tributary to Henry. Ouban, who had usurped the crown of Hungary, invaded Bavaria and Carinthia (Kaernthen) and took much booty. But the Bavarians united all their forces, followed them, retook the booty, killed a great many of them, and put the rest to flight. 1042. King Henry made his first campaign against Hungary, and put Ouban to flight. He went into Hungary as far as the Raab river, took three great fortresses, and received the oath of fidelity from the inhabitants of the land. 1043. The king celebrated Christmas at Goslar, where the duke of Bohemia came to see him. He was kindly received by the king, honorably entertained for some time, and at length sent away in peace. Ambassadors came to him there from many peoples, and among them those of the Rusci, who went away sad because Henry refused to marry the daughter of their king. Ambassadors also came from the king of Hungary and humbly sued for peace. But they did not obtain it, because king Peter, who had been deposed and driven out by Ouban, was there and was begging for the help of Henry against Ouban. II. THE PAPACY TO THE ACCESSION OF GREGORY VII, 1073