Turton has Gerberge as "d' Arles", daughter (with a ?) of Rotbold II Comte d'Arles, while AR has Gerberga (de Gatinais?). Neither source seems sure. Others say Gerberga du Maine, de Vienne, or de Tours. ##check ancestry
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The following post to soc.genealogy.medieval on 1 Jun 1998 by Ken Finton indicates that the only agreement seems to be to her first name (Professor Bachrach, a historian, proposed the existence of Gerberga, daughter of Ratburnus of Vienne, who married Fulk II, on purely political/historical grounds, even though there was no other indication that Ratburnus had a daughter named Gerberga.):
This is directed at Professor Bachrach:
There seems to be a lot of disagreement as to the father of Gerberga, wife of Fulk II. It has been called to my attention that you favor her identification as:
Gerberga of Vienne, d/o Ratburnus. ["Prosopographical Method", _Medieval Prosopography 7_ , no. 2 (1986), 1-23. In his "Fulk Nerra" Bachrach says firmly that she is Gerberga of Vienne, da. of the "mere" (as he puts it, as part of his argument on the political import of the marriage) viscount of Vienne, Viscount Ratburnus I (p. 7 - and see his geneal of this house, chart 14)."]
ES III:116 says this Fulk m. (1) Gerberga, dau. of Herve, Ct of Maine and (2) the widow of Alain, Duke of Brittany. Turton (chart 6) has her as Gerberga d'Arles, da. of Rotbold II, comte d'Arles. Also, Her father may have been Theobald de Tours.), source Royalty for Commoners, by Roderick W. Stuart, p. 125.
If she is of Vienne, how can this be backed up? To complicate matters, I see that Christian Thevenot, "Foulque III Nerra, Comte d'Anjou" (1987) endorses Gerberga as Gerberge du Maine, da. of HervÈ, Sgr du Maine, as the ES Chart shows.
Kenneth Harper Finton
Editor/ Publisher
THE PLANTAGENET CONNECTION
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I have adopted the ancestry for Gerberga, presented on soc.genealogy.medieval by Alan B. Wilson, based on work by Settipani, which is still speculative.