House of Ardenne-Luxembourg
The House of Luxembourg (or Luxembourg), also known as the House of Ardenne-Luxembourg in order to distinguish it from later families, were a Lotharingian noble family known from the tenth and eleventh centuries. They are one of the three main branches of the House of Ardenne, along with the House of Ardenne-Verdun, and the House of Ardenne-Bar.
All these Ardennes families descended from Cunigunda of France, a granddaughter of the West Frankish king Louis the Stammerer, and her husband Wigeric of Lotharingia. The Luxembourg branch descend from their son Sigfried, Count of the Ardennes.
One continuing male-line branches of the House of Luxembourg include the House of Salm. The later House of Limburg, Dukes of Limbourg, whose descendants became Dukes of Luxembourg and a royal dynasty in Germany, descend from the House of Ardennes-Luxembourg through the daughter of Frederick, Duke of Lower Lorraine.
Children of Count Sigfried:
- Henry I of Luxembourg
- Siegfried, cited in 985
- Frederick I, Count of Salm and Luxembourg, married Ermentrude of Gleiberg, daughter of Heribert I, Count of Gleiberg and Ermentrud (Imizi). Ancestor of the main known continuing lines...
- Henry VII (d. 1047), Count of Luxembourg and Duke of Bavaria
- Frederick, Duke of Lower Lorraine (1003–1065), Duke of Lower Lorraine. Ancestor of the Dukes of Limburg, and the Limburg-Luxemburg dynasty.
- Giselbert of Luxembourg (1007–1059), Count of Longwy, of Salm, and of Luxembourg, who continued the male line...
- Thierry (d. 1075)
- Henry, Count Palatine of Lorraine (d. 1095)
- Poppon of Metz (d. 1103), Bishop of Metz
- Gisèle of Luxembourg (1019–after 1058); married Radulfe, Lord of Aalst (d. after 1038); parents of Gilbert de Gant
- Dietrich II, bishop of Metz, 1006-1047
- Adalberon, archbishop of Trier 1008-1046
- Gislebert (d.1004), count in the Moselgau
- Cunigunda, married Henry II, Holy Roman Emperor
- Eve, married Gerard, Count of Metz
- Ermentrude, abbess
- Luitgarde, married Arnulf, Count of Holland
- a daughter, married Thietmar
|the First House (Ardenne-) Luxembourg simplified|
- Parisse, ‘Généalogie de la Maison d'Ardenne’, La maison d'Ardenne Xe-XIe siècles. Actes des Journées Lotharingiennes, 24 - 26 oct. 1980, Centre Univ., Luxembourg, (1981) 9-41
- Jean-Louis Kupper (2007) Les origines du duché de Limbourg-sur-Vesdre", Revue belge de Philologie et d'Histoire Année 85-3-4 pp. 609-637 
- Gades, John A. (1951). Luxembourg in the Middle Ages. Brill.
- David M Nicholas (2014). Medieval Flanders. Routledge.