Weis' "Ancestral Roots . . ." (155:18).

Weis' "Ancestral Roots . . . 8th Ed." (147A:17).

Stuart's "Royalty for Commoners," (175:37), (300:39), Count of Auxerre,858; Margrave of Tranjurian Burgundy, Lay Abbot of St. Moritz, d. bef. 876, md. Waldrada (Vaudrie) (mother of Rudolph), prob. an Alsacian Etichnoid. He md., also, Ermentrude, dau. of Luitfried.

In the book by M. Bugge "Vaare forfedre" it's stated explicitedly that Conrad was not son of Conrad I of Swabia, but his brother Rudolf. ES III/4:736 following Tellenbach and others clearly indicates that Conrad II was the son of Conrad I and Aelis dau. of Hugo of Tours.

Conrad II, Duke of Transjurane Burgundy (From Wikipedia, the free encyclopedia):
. Conrad II the Younger was the Count of Auxerre from 864 until his death. He was a son of Conrad I of Auxerre, and Adelaide; an older brother of Hugh the Abbot; and a member of the Bavarian branch of the Welfs.
. In 858, at the coaxing of Charles the Bald, his cousin, he and his brother betrayed Louis the German when he sent them on an espionage mission and went over to Charles, who rewarded them handsomely because he had lost his Bavarian honores. He acted as Duke of Transjurane (Upper) Burgundy from then until about 864.
. He married Judith, daughter of Eberhard of Friuli, and later Waldrada of Worms, by whom he left a son, Rudolf, who later became King of Transjurane Burgundy.
. Sources:
. The Annals of Fulda. (Manchester Medieval series, Ninth-Century Histories, Volume II.) Reuter, Timothy (trans.) Manchester: Manchester University Press, 1992.

Stuart's "Royalty for Commoners" (389:39).

Conrad II, Duke of Transjurane Burgundy (From Wikipedia, the free encyclopedia):
. Conrad II the Younger was the Count of Auxerre from 864 until his death. He was a son of Conrad I of Auxerre, and Adelaide; an older brother of Hugh the Abbot; and a member of the Bavarian branch of the Welfs.
. In 858, at the coaxing of Charles the Bald, his cousin, he and his brother betrayed Louis the German when he sent them on an espionage mission and went over to Charles, who rewarded them handsomely because he had lost his Bavarian honores. He acted as Duke of Transjurane (Upper) Burgundy from then until about 864.
. He married Judith, daughter of Eberhard of Friuli, and later Waldrada of Worms, by whom he left a son, Rudolf, who later became King of Transjurane Burgundy.
. Sources:
. The Annals of Fulda. (Manchester Medieval series, Ninth-Century Histories, Volume II.) Reuter, Timothy (trans.) Manchester: Manchester University Press, 1992.

1. Adalgunde

1. Rudolph I b: 0859 in Burgundy
2. Adelaide*