Siegfried (c. 922 – 28 October 998) is considered the first count of Luxembourg. He was actually count in the Moselgau

Moselle

Moselle is a department in the east of France named after the river Moselle.- History :Moselle is one of the original 83 departments created during the French Revolution on March 4, 1790...

 and the Ardennes

Ardennes

The Ardennes is a region of extensive forests, rolling hills and ridges formed within the Givetian Ardennes mountain range, primarily in Belgium and Luxembourg, but stretching into France , and geologically into the Eifel...

. He was also the advocate of the abbeys of Saint-Maximin de Trêves

Saint-Maximin

Saint-Maximin is the name or part of the name of several communes in France:* Saint-Maximin, in the Gard département* Saint-Maximin, in the Isère département* Saint-Maximin, in the Oise département...

 and Saint-Willibrod d'Echternach

Echternach

Echternach is a commune with city status in the canton of Echternach, which is part of the district of Grevenmacher, in eastern Luxembourg. Echternach lies near the border with Germany, and is the oldest town in Luxembourg....

. He is speculated to be the son of Wigeric of Lotharingia

Wigeric of Lotharingia

Wigeric or Wideric was the count of the Bidgau and held the rights of a count within the city of Trier. He received also the advocacy of the Abbey of Saint RumboldThe abbey founded by St. Rumbold in the 6th, 7th or 8th century and a 9th century St...

, Count Palatine

Count palatine

Count palatine is a high noble title, used to render several comital styles, in some cases also shortened to Palatine, which can have other meanings as well.-Comes palatinus:...

 and Cunigunda. He is the founder of the House of Luxembourg

House of Luxembourg

The House of Luxembourg was a late medieval German dynasty, which between 1308 and 1437 ruled the Holy Roman Empire, twice interrupted by the rivaling House of Wittelsbach.-History:...

, a cadet branch of the House of Ardennes.

He had possessions from his father in Upper Lorraine. At the centre of his dominions he constructed the fortress of Luxembourg

Luxembourg

Luxembourg , officially the Grand Duchy of Luxembourg , is a landlocked country in western Europe, bordered by Belgium, France, and Germany. It has two principal regions: the Oesling in the North as part of the Ardennes massif, and the Gutland in the south...

 in 963. A town soon grew up around the castle. Though he used the title of count, the title "count of Luxembourg" was only applied to William some 150 years later.

Around 950, he married Hedwig of Nordgau

Hedwig of Nordgau

Hedwig of Nordgau was the wife of Siegfried of Luxembourg, first count of Luxembourg and founder of the country. They were married circa 950. She was of Saxon origin but her parentage is not known for sure. Some sources list her as the daughter of count Eberhard IV of Nordgau and Luitgard of...

 (937–992), daughter of Eberhard IV of Nordgau. They had the following issue:

• Henry I of Luxembourg
• Siegfried, cited in 985
• Frederick I, Count of Salm and Luxembourg
  Frederick of Luxembourg
  Frederick of Luxembourg , count of Moselgau, was a son of count Siegfried of Luxembourg and Hedwig of Nordgau.By a wife whose name is unknown , he had:...
  
  , married Ermentrude of Gleiberg, daughter of Heribert I, Count of Gleiberg and Ermentrud (Imizi).
• Dietrich
  Dietrich I of Metz
  Dietrich of Metz was Bishop of Metz from 964 until his death. He was the son of Hedwig of Nordgau and Siegfried of Luxembourg.He succeeded Adalbero I as bishop of Metz...
  
  , bishop of Metz
• Adalberon, canon of Trier
  Trier
  Trier, historically called in English Treves is a city in Germany on the banks of the Moselle. It is the oldest city in Germany, founded in or before 16 BC....
  
  
• Gislebert (d.1004), count in the Moselgau
  Moselle
  Moselle is a department in the east of France named after the river Moselle.- History :Moselle is one of the original 83 departments created during the French Revolution on March 4, 1790...
  
  
• Cunigunda
  Cunigunde of Luxemburg
  Saint Cunigunde of Luxembourg, O.S.B. , also called Cunegundes and Cunegonda, was the wife of the Holy Roman Emperor Saint Henry II. She is the Patroness of Luxembourg; her feast day is 3 March....
  
  , married Henry II, Holy Roman Emperor
  Henry II, Holy Roman Emperor
  Henry II , also referred to as Saint Henry, Obl.S.B., was the fifth and last Holy Roman Emperor of the Ottonian dynasty, from his coronation in Rome in 1014 until his death a decade later. He was crowned King of the Germans in 1002 and King of Italy in 1004...
  
  
• Eve, married Gerard, Count of Metz
• Ermentrude, abbess
• Luitgarde
  Lutgardis of Luxemburg
  Lutgardis of Luxembourg, also known as Liutgardis, Liutgarde and Lutgard, was a daughter of Siegfried of Luxembourg and Hedwig of Nordgau. Her sister was Cunigunde of Luxembourg. She married Arnulf, Count of Holland...
  
  , married Arnulf, Count of Holland
  Arnulf, Count of Holland
  Arnulf, also known as Aernout or Arnold succeeded his father in 988 as Count in Frisia. He was born in 951 in Ghent and because of this he is also known as Arnulf of Ghent. Arnulf was the son of Dirk II, Count of Holland and Hildegard, thought to be a daughter of Arnulf of Flanders.-Career:Arnulf...
  
  
• a daughter, married Thietmar

Sources

• Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis, Lines: 100A-20, 100B-21, 143-19, 143-20
• http://luxembourgroyals.web-log.nl/luxembourgroyals/2006/10/siegfried_i_van.html