Robert I, count of Namur - is his mother wrong?

I didn't scroll up enough. It is Reginar I, not Rerinar II who had the daughter who married Berengar.

REGINAR [I] "Langhals/Longneck", son of GISELBERT [I] Graf van Maasgau & his wife --- of Lotharingia ([850]-Meerssen [25 Aug 915/19 Jan 916]).
m [secondly] ALBERADA, daughter of ---.
Count Reginar [I] & his [second] wife had three children:

1. GISELBERT [II] ([885/900
2. REGINAR [II] ([885/900]-932 or after).
3. daughter. Flodoard's Annals refers to the wife of "Berengarius" as "sororem [Gislebertum]" but does not name her[1525]. m BERENGAR Comte de Namur, son of --- (-before 946).

sororem Gislebertum translates to sister of GISELBERT ?

Sorry for the mistake.

Looks like I'm debating myself.
Wikipedia https://en.wikipedia.org/wiki/Reginar_Longneck USED to state,
Reginar left the following children:

Gilbert, Duke of Lorraine
Reginar II, Count of Hainaut
Balderic, Bishop of Utrecht
Frederick, Archbishop of Mainz
a daughter, possibly named Symphoria, who married Berengar, Count of Namur

HOWEVER, it now says "a daughter, who married Berengar, Count of Namur"

Did you check and discuss fully and thoroughly (that means all the sources of the surrounding profiles in english, dutch, french and German) the genealogieonline.nl?

https://www.genealogieonline.nl/en/family-tree-welborn/I31573.php

https://www.genealogieonline.nl/family-tree-welborn/I31573.php

Success!