Individual Details

According to Wikipedia:

Gilbert (or Giselbert) (c. 890 - 2 October 939) was son of Reginar, dux ('duke') of Lotharingia, the great-grandson of the Carolingian emperor, Lothair I, and the brother-in-law of the Ottonian emperor, Otto I. He was duke of Lotharingia (or Lorraine) until 939. Gilbert was also lay abbot of Echternach, Stablo-Malmedy, St Servatius of Maastricht, and St Maximin of Trier.[1]

The beginning of the reign of Gilbert is not clear. A dux Lotharingiae is mentioned in 910 and this may have been Gilbert. Lotharingia sided with Charles III in 911, who was deposed in West Francia in 922 by Robert but remained king in Lotharingia, from where he tried to reconquer West Francia until being imprisoned in 923. In 923, Gilbert and Archbishop Ruotger of Trier invited the Ottonian king Henry I to invade Lotharingia. In 924, Gilbert changed his allegiance over to the West Frankish king Rudolf. After Henry managed to occupy Lotharingia in 925, Gilbert swore fealty to him and Henry transferred the abbey of St Servatius of Maastricht (which had been taken from him and given to the church of Trier in 919) to Gilbert. To secure their relationship, Gilbert was also married to Henry's daughter, Gerberga of Saxony.

Following Henry's death in 936, Gilbert rebelled against the former's son, Otto I in 939, changing his allegiance to the West Frankish king, Louis IV. Gilbert managed to be practically independent for three years until he was defeated by the army of Otto I in 939 at the Battle of Andernach. Gilbert was made prisoner, but managed to escape; while fleeing, he drowned trying to cross the Rhine. Lorraine was given to Henry I, Duke of Bavaria.

References
Barth, Rüdiger (1990). Der Herzog in Lotharingien im 10. Jahrhundert. Sigmaringen. pp. 39-82.


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According to Wikipedia:

Gilbert (or Giselbert) (c. 890 - 2 October 939) was son of Reginar, dux ('duke') of Lotharingia, the great-grandson of the Carolingian emperor, Lothair I, and the brother-in-law of the Ottonian emperor, Otto I. He was duke of Lotharingia (or Lorraine) until 939. Gilbert was also lay abbot of Echternach, Stablo-Malmedy, St Servatius of Maastricht, and St Maximin of Trier.[1]

The beginning of the reign of Gilbert is not clear. A dux Lotharingiae is mentioned in 910 and this may have been Gilbert. Lotharingia sided with Charles III in 911, who was deposed in West Francia in 922 by Robert but remained king in Lotharingia, from where he tried to reconquer West Francia until being imprisoned in 923. In 923, Gilbert and Archbishop Ruotger of Trier invited the Ottonian king Henry I to invade Lotharingia. In 924, Gilbert changed his allegiance over to the West Frankish king Rudolf. After Henry managed to occupy Lotharingia in 925, Gilbert swore fealty to him and Henry transferred the abbey of St Servatius of Maastricht (which had been taken from him and given to the church of Trier in 919) to Gilbert. To secure their relationship, Gilbert was also married to Henry's daughter, Gerberga of Saxony.

Following Henry's death in 936, Gilbert rebelled against the former's son, Otto I in 939, changing his allegiance to the West Frankish king, Louis IV. Gilbert managed to be practically independent for three years until he was defeated by the army of Otto I in 939 at the Battle of Andernach. Gilbert was made prisoner, but managed to escape; while fleeing, he drowned trying to cross the Rhine. Lorraine was given to Henry I, Duke of Bavaria.

References
Barth, Rüdiger (1990). Der Herzog in Lotharingien im 10. Jahrhundert. Sigmaringen. pp. 39-82.

Birth	890
Death	2 Oct 939

Child

Albérade de Lorraine (930 - 973)