Judith was the daughter of a Count of Flanders, and the wife of firstly, Tostig Godwinsson, Earl of Northumbria, and brother of Harold II, King of England, and secondly Welf I, Duke of Bavaria.
In all the early sources, Judith is identified as a daughter of a Count of Flanders, and in some the daughter of Baldwin, Count of Flanders, but very few identify which Baldwin. Even with those sources that do identify which Baldwin, some list her as a sister of Baldwin V, and thus daughter of Baldwin IV, and others as a daughter of Baldwin V.
The first modern author to analyse these discrepancies was Edward Augustus Freeman in The history of the Norman Conquest of England, and he came to the conclusion that Judith was the daughter of Baldwin IV, Count of Flanders, with this second wife, the unnamed daughter (but often called Eleanor) of Richard II, Duke of Normandy. This theory has generally been followed by most researchers ever since.
For a more detailed discussion of the sources and why Freeman's theory seems to make the most sense, see the Commentary section in the article about Judith in the website The Henry Project by Stewart Baldwin
Morkinskinna states that Skúli was a son of Tostig, and mentions Ketill in the same passage without giving any relationship. In a passage describing the same events, Heimskringla  states that Skúli and Ketill were brothers of noble English blood, but does not state their parentage. (Some published versions of Heimskringla based on later manuscripts make the brothers sons of Tostig, but this is not in Hollander's translation, based on the earliest manuscripts.) Skúli was evidently an adult at the time of the Battle of Stamford Bridge (1066), and it has also been pointed out [Cleve & Hlawitschka (1982), 27] that the Norwegian names Skúli and Ketill are unknown among Tostig's and Judith's families, so it seems unlikely that they were children of Judith, and it would be extremely difficult to identify them with the children of Judith mentioned above who were still infants in 1065. If these sons have been correctly attributed to Tostig (and that itself is not certain), then they would have been much more likely to have been born by a Norwegian wife or mistress prior to Tostig's marriage to Judith.
m.2 (1071) Welf I Este, Duke of Bavaria (1030/40 - 09 Nov 1101; p. Alberto Azzo II, Marchese d'Este and Kunigunde von Altdorf).
|MEDIEVAL LANDS: A prosopography of medieval European noble and royal families by Charles Cawley © Foundation for Medieval Genealogy & Charles Cawley 2000-2018.|
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