Eberhard de Sulichgau, of Sulichgau - Alt Data

Living at the same time, considering the fact that Ermentrude of France was high nobility.

Eberhard I, Graf im Zürichgau

This is a really tough problem, I remember spending weeks trying to figure out these lines with little luck.

It looks like Geni is following a more or less traditional theory (with which there are variations), along these lines:

https://upload.wikimedia.org/wikipedia/commons/c/ce/Ahnentafel_Regi...

Whereas, in 2021 Jeannette Rothlisberger produced a pedigree chart showing Regelinde as the daughter of our Gisele's brother Eberhard. In other words as Gisele's niece, not her daughter.

https://upload.wikimedia.org/wikipedia/commons/2/21/Stammbaum-Regin...

https://commons.wikimedia.org/wiki/File:Stammbaum-Reginlinde.jpg

The alternative theory also has Gisela and brothers, Berengar and Eberhard as children of Unruoch, so of that dynasty rather than from what would have been her aunt Judith.

(Geni's parentage for Gisela is on a completely different path with Walthred of Verona and Gisela of Friulli, based on what I'm not sure).

I don't know anything about Ms. Rothlisberger's credentials, although she's obviously interested in Regelinde's ancestry

This Wikipedia artical on Ermentrude of France suggests that she married Gisela's brother, Everhard son of Unruoch, in line with Ms. Rothlisberger's theory. Several German sources are cited in the article about Unruoch's son, Eberhard.

https://en.wikipedia.org/wiki/Ermentrude_(daughter_of_Louis_the_Sta...

https://en.wikipedia.org/wiki/Eberhard_of_S%C3%BClichgau

1. Kommission für Geschichtliche Landeskunde in Baden-Württemberg, Württembergische Kommission für Landesgeschichte, Württembergischer Geschichts- und Altertumsverein (1954). Zeitschrift für Württembergische Landesgeschichte (Volumes 13-14). W. Kohlhammer. p. 293.

2. Kruppa, Nathalie (2007). Adlige - Stifter - Mönche (zum Verhältnis zwischen Klöstern und mittelalterlichem Adel) (in German). Vandenhoeck & Ruprecht. p. 23. ISBN 9783525358863.

3. "Unruoch Herzog von Friaul (866-874)". www.manfred-hiebl.de. Retrieved 25 May 2022.

4. "Adalhard "von Burc" lay abbot of Cysoing". www.manfred-hiebl.de.
Steinmann, Judith.

5. "Reginlinde". Historical Dictionary of Switzerland. Retrieved 18 May 2022.

6. Dr. Sauter (2022). Kirchengeschichte Schwabens bis zur Zeit der Hohenstaufen (in German). Salzwasser-Verlag. p. 139. ISBN 9783752598988.

I think the key to this puzzle may be found within the rather obscure (almost all in German language and/or Latin) histories of Swabia. I tried before to read some of it, and found the texts rich with factual information. But unfortunately my German language skill is very weak, making it difficult to form a complete mental picture.

The more traditional version of the pedigree showing Regelinde, apparently came from: NEUJAHRSBLATT [New Year's Leaflet] of the Fraumünster Society for the year 2020 - page 19.

https://stammler-genealogie.ch/showmedia.php?mediaID=10116

Fraumunster is a Swiss church in Zurich. Jeannett Rothlisberger is associated with both of the above variations of the pedigree (the 2021 version being the latest), and with the Fraumunster Society. So her charts were first published in their 'leaflet' or newsletter.

She is also cited in Stammler Genealogie on the page for Regelinde's mother Gisela, whose parents are not listed but who is identified as an Unruochingerin.

https://stammler-genealogie.ch/getperson.php?personID=I4691&tre...

So of course none of this is conclusive, it only proves how little anyone really knows about it.

https://en.wikipedia.org/wiki/Fraum%C3%BCnster

Apparently Gisela had a brother besides Berengar, whose name was the same (Eberhard) as that of her husband. They should be differentiated by their respective parentage and titles, along with the actual history involved (locations and activities of the subjects, etc.); which ought to be reasonably simple and straighforward, but obviously isn't in this case.

With the primary sources nearly all to be found in German and Latin, someone fluent in those languages would be best suited for the task.

About her 'marrying her brother', yeah, I wondered about that too. That seems to be the biggest issue with the more traditional, older theory.

I tend to agree with Ms. Rothlisberger's 2021 version of the chart. It looks like she has really been studying the problem, and is onto something. But even she is having trouble putting together a convincing argument with full documentation.

So imagine how I must feel, lol.

This is her updated version:

https://commons.wikimedia.org/wiki/File:Stammbaum-Reginlinde.jpg

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