Guinidilda de Ampurias

Recent researchers and historians seem very clear that she was NOT the daughter of Baldwin (Baudouin) and Judith of Flanders, despite some earlier interpretations to the contrary. Her origin is not clear, though charters in the 9th century give her father's name as Seniofredo (see below).

From Stephen Baldwin's database on Baldwin Count of Flanders [http://sbaldw.home.mindspring.com/hproject/prov/baldw001.htm]:

Falsely attributed daughter: Guinidilda, m. Guifred, count of Barcelona, 870-897.

Gesta comitum Barcinonensium (of which this part was composed shortly after 1160) states that Guifred impregnated a daughter (unnamed) of the count of Flanders (also unnamed) and later married her [see RHF 9: 68]. Later authors have expanded the story to identify this girl with Guifred's known wife Guinidilda, with the count of Flanders in question being variously identified as Baldwin I or Baldwin II [e.g., Anselme 2: 714]. There is no good reason to accept this late and legendary source on this point. The legend is probably modelled on the story of Baldwin and Judith [see Freedman (1988), 15-6, 18 n. 54].

Père Anselme, Histoire généalogique et chronologique de la maison royale de France, 9 vols. (Paris, 1726-33).

Paul Freedman, "Cowardice, Heroism and the Legendary Origins of Catalonia", Past & Present 121 (1988): 3-28

From the Foundation for Medieval Genealogy database:

m (before 27 Jun 875) GUINIDILDA, daughter of SENIOFREDO & his wife --- (-[21 Aug 897/18 Feb 900]). Wifredo "el Velloso" and his wife Winidilda donated property to San Juan de Ripoll monastery by charter dated 27 Jun 875 which names "fratre meo…Seniofredo"[86]. Her parentage is confirmed by charters dated 875, 877 and 878 under which "Winidildes commitissa" donated property "in comitato Impuritano in villa…Kabannas omnem portionem mihi…de comparatione de cuondam patrem meum…Seniofredo" to San Juan de Ripoll monastery[87]. The name of her father "Seniofredo" suggests that Guinidilda may have been a close relative of her husband, whose father had the same name. According to Weir[88], she was Gunhild, daughter of Baudouin I Count of Flanders. It is assumed that this is based on the Gesta Comitum Barcinonensium which records that Charles II "le Chauve" King of the Franks gave a daughter of the Count of Flanders in marriage to "Pilosi" at the same time as granting him the county of Barcelona[89], although this source is unreliable in some points of detail concerning the family of the counts of Barcelona. The Crónica de San Juan de la Peña also records that "Iuffré Pellos" married "una filla del..Conte de Flandres"[90]. Considering that the early counts of Flanders were in 877 still in the process of consolidating their newly founded county, it is not clear what contact they would have had with a count whose territory was so distant from their own sphere of activity, or the advantages they would have seen in such a dynastic marriage. The only known point in common between the two counts appears to have been King Charles II "le Chauve" who was suzerain of both. Gunhild is not shown among the children of Count Baudouin in Rösch[91]. In any event, this supposed Flemish origin is disproved by the charters quoted above. A charter dated 21 Aug 897 names Wifredo and his wife Winidilda[92]. A charter dated 18 Feb 900 of "su hija abadesa Emmon" [daughter Emma] refers to her mother as deceased[93].

http://fmg.ac/Projects/MedLands/CATALAN%20NOBILITY.htm