The children of Grimhildis (according to MedLands) were
Engeltrude of Fézensac, wife of Odo of Orléans, and mother of Ermentrude of Orléans who married future emperor Charles the Bald.
Adalard the Seneschal (seneschal of the Carolingian empire under the reign of Louis the Pious)
Girart de Roussillon (or Gerard II of Paris), count of Paris, Roussillon, and Vienne.
But the Geni tree has:
Grimhildis of Fezensac Aquataine (de roussillon) MP
Birth: circa 788
Death: circa 856 (60-76)
Immediate Family:
Daughter of Baudouin (Balduin) d'Aquitaine
Wife of Leuthard II, count of Paris
Mother of Oda of d'Orleans-Eifelgua (de Paris); Ruthildis of Paris; Bego II de Flavigny; Theodrada d'Orleans (de Paris) and Adalard de Paris
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No Girard, and two extra daughters, and a name that does not meet conventions?