Walram I of Limbourg, said Udon, who died around 1082, was the Count of Arlon of 1052 to 1082, and Count of Limbourg in 1065 to 1082. It seems to be the son of Walram, Count of Arlon.
The origin of his family is not well known, it seems to be a member of a collateral branch of the House of Ardenne. It is also possible that her mother was Adele Lorraine, daughter of the Duke of Thierry I Upper Lotharingie
It is the first Earl of Arlon in undivided Fulk with his brother, then became only count on the latter's death in 1078.
He married Jutte, daughter of Luxebourg Frederick, Duke of Lower Lorraine and Gerberga de Boulogne, which will give him as a son:
* Henry I (1059 1119), Duke of Limbourg
This brought him into marriage dot the county or Lengau Len, a former county district of Liege. Waleran settled in this land, and built a castle he named Limbourg (= Len-burg). This castle and the town that surrounds it became the capital of Lengau County, which then took the name of the county of Limbourg. He also confessed to the abbey of Saint-Trond, depending on the bishop of Metz, that his stepfather had held, and it transmit the load to his descendants.
Walram de Limbourg I (Waleran) 
