Hamon (Aimon), Seigneur de Château-du-Loire - parentage of Hamon de Château-du-Loir

From Medlands (below) it seems the parents of Hamon de Château-du-Loir were unknown but that his grandmother was RORANS (parents also unknown)

This does not agree with the Geni tree at the moment which gives Hamon's parents as Hamon aux Dents Lord of Creully & Germaine de Corbeil and this looks doubtful to me as the dates don't quite match.

Do any of the many managers of this profile have a source to support the current Geni Tree?

Medlands-

---. m RORANS, daughter of ---. Gervais Archbishop of Reims wrote concerning the relics of Saint Mélaine to Even Abbé de Saint-Mélaine, dated [1055/67], naming "Rorans avia mea" and recording that she was granted the domaine of Argentré "in Cenomanensi pago" by way of dower, specifying that it was transmitted to "nepoti suo, quem de filio suscepit, Haimoni patri meo"[246]. One child:

a) son . The name of Rorans's son is not known. m ---. One child:

i) HAMON [Hamelin] de Château-du-Loir (-15 Jan [1030]). Gervais Archbishop of Reims wrote concerning the relics of Saint Mélaine to Even Abbé de Saint-Mélaine, dated [1055/67], naming "Rorans avia mea" and recording that she was granted the domaine of Argentré "in Cenomanensi pago" by way of dower, specifying that it was transmitted to "nepoti suo, quem de filio suscepit, Haimoni patri meo"[247].