Stuart's "Royalty for Commoners" (258:38) identifies the wife ofMANASSES and mother of GISELBERT as "Ermengarde, princess ofBurgundy; d. 12 Apr 935; prob. dau. of BOSO, KING OF BURGUNDY [sic. KING OF PROVENCE (RIN 2137)]."
Matman posted tosoc.genealogy.medieval on 20 May 1997 (in part):Subject: Re: Wife of Manassas I, C. of Chalon"Giselbert appears with his mother Ermengarde (I) in a charter of 924.I don't think she died in 935, but she was dead by then. Some of theconfusion undoubtedly comes from the fact that GISELBERTs wife wasalso called ERMENGARDE (II) in a charter of 942, which also names theirdaughter ADELAIDE. No document or source says who the fathers of thesedifferent Ermengarde's were. But some have speculated that the nameErmengarde was introduced into these families by the marriage of BOSOto ERMENGARDE OF ITALY [RIN 2138] (dau. of LOUIS II [RIN2139], whosemum was ERMENGARDE d.851). Thus some see Ermengarde (I) as a dau ofBOSO OF PROVENCE (d.887), therefore grand-dau of BUVINUS COUNT OFMETZ [RIN 4258] (and I think this theory can be found somewhere in theES).A old view was that Ermengarde (II) was the daughter of RICHARD THEJUSTICIAR [RIN 1238] (d.921) brother of BOSO: this was followed byMckitterick in her book on the Carolingians (1983). But there have beenother theories as well. The ES is not much help on this as it tends toplonk the various (often contradictory) theories down in differentvolumes, without any explanation. I wonder what Settipani says?I think some have noted that there is yet another Ermengarde (III) whoappears as the first wife of Leotold of Macon and Besancon in the charterof 935 (Cluny 432): she was a daughter of Manasses I and sister of GISELBERT (C.Bouchard 'Sword and Mitre')."