Gilbert, Count of the Maasgau
Gilbert (Giselbert), Count of Maasgau was a Frankish noble in what would become Lotharingia, during his lifetime in the 9th century. The Carolingian dynasty created this "middle kingdom" and fought over it, and he was is mentioned as playing a role on both sides. After the death of Louis the Pious in 840, Gilbert was a vassal of Charles the Bald in the western kingdom which later became France, but he switched sides to join Charles' brother Lothar I, who would become first king of the future Lotharingia. Gilbert later offered to switch sides again . Various proposals have been made about his family connections and exact titles, though most of these are considered uncertain. Attestations. Nithard, a near contemporary, mentions him twice: The Annals of Fulda Abbey also make two mentions of a Count Gilbert in subsequent years, who is generally thought to be the same person. In 870, the Treaty of Meerssen was made, which ceded much of Lotharingia to Charles the Bald. A Count Gilbert was mentioned in some later records from this time: In 880, the Treaty of Ribemont conceded all of Lotharingia to be once again under the eastern Frankish kingdom  ("Germany"). From 884 until his death in 887, the eastern king, Charles the Fat even ruled the western kingdom ("France"). Another possible record of Gilbert is sometimes proposed: Mansuaria. As explained above, the few records which exist are enough to demonstrate that Count Gilbert was associated with the region between the Silva Carbonaria and the Meuse. However, as is typical for this period, it is difficult to assign exact counties to him in the way that medieval lords would typically be described from the 11th century. The description as "comes Mansuariorum", has been the subject of much discussion. Mansuaria has  been given various explanations, which note that the spelling "Masuarinsis" (without "n") is found in another medieval document, the "Gesta" of the Abbey of St Truiden, which was describing places near modern Diest. It is therefore considered to come from somewhere in that region, probably closer to the Meuse (Maas). There are two main variants: Family. Gilbert's background is not known. The similarity of his apparent son's name to the name "Ragnar" has been used as an argument to suggest a Viking connection. Another possibility is that he was related to a man named Reginar, son of Meginhere  (a nobleman from the court of Charlemagne). Rösch suggests that Gilbert's wife was named Ermengarde, but there is no conclusive evidence that this is correct. Children may include: