https://books.google.be/books?id=0QJYAAAAcAAJ&pg=PT18 The search as discussed on...
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https://books.google.be/books?id=0QJYAAAAcAAJ&pg=PT18 The search as discussed on G2G went: Carl Knetsch's Das Haus Brabant (go to p. 14, image 26) http://archiv.ub.uni-marburg.de/eb/2015/0060/view.html cites Ernst p.471 as a source to say this proposal originated with Blondel, and that he was followed by Tollner and Mallet. Knetsch adds that Behr follows them. Ernst should be p.473. https://www.persee.fr/doc/bcrh_0770-6707_1857_num_25_9_2939 Ernst actually pointed out that Mallet calls her Alix, and makes her the daughter of Hugh count of Eguisheim and Dagsburg. For Mallet he cites only indirectly to L'Art de vérifier les dates, p.631. Ernst did not feel confident about Mallet, because he was only quoting a recent history of Toul cited by someone else (Wassebourg, fol.260, alias 216)?