Welf I or Welfo (died before 876) was a

Swabia Swabia ; german: Schwaben , colloquially ''Schwabenland'' or ''Ländle''; archaic English also Suabia or Svebia is a cultural, historic and linguistic region in southwestern Germany. The name is ultimately derived from the medieval Duchy of ...

n nobleman. He was a member of the

Elder House of Welf An elder is someone with a degree of seniority or authority. Elder or elders may refer to: Positions Administrative * Elder (administrative title), a position of authority Cultural * North American Indigenous elder, a person who has and tr ...

Welf was probably a son of

Conrad I of Auxerre Conrad I the Elder (died about 864) was the count of several counties, most notably the Aargau and Auxerre, around Lake Constance, as well as Paris from 859 to 862/864. He was also the lay abbot of Saint-Germaine in Auxerre. Conrad's father was W ...

, and seems to have taken over his father's offices in Swabia, namely: count of

Alpgau Alpgau (also ''Albgau'') was a territory of Alemannia and the Duchy of Swabia during the 8th to 12th centuries.
It comprised ...

, count of

Linzgau Linzgau is a historic region in Southern Germany, in the state of Baden-Württemberg. It is located north of Lake Constance and south of the Danube valley. Geography The region is bounded by the shore of Lake Constance on the south, the Hegau reg ...

, and possibly count of

Argengau Argengau was a territory of Alemannia within East Francia in the 8th and 9th centuries, being a county in the 9th century,Smith, Julia M.H. "Einhard: The Sinner and the Saints" ''Transactions of the Royal Historical Society'', Vol. 13 (2003) 55-77 ...

. However, when Conrad and his other sons changed allegiance from King

Louis the German Louis the German (c. 806/810 – 28 August 876), also known as Louis II of Germany and Louis II of East Francia, was the first king of East Francia, and ruled from 843 to 876 AD. Grandson of emperor Charlemagne and the third son of Louis the P ...

to King

Charles the Bald Charles the Bald (french: Charles le Chauve; 13 June 823 – 6 October 877), also known as Charles II, was a 9th-century king of West Francia (843–877), king of Italy (875–877) and emperor of the Carolingian Empire (875–877). After a ser ...

in 859, Welf disappears from the historical record. It is assumed that he fell out of favor with King Louis and lost his offices; the Swabian branch of the Elder Welfs was not mentioned again until

Rudolf II, Count of Altdorf Rudolf II (also Rudolph) (died c.990) was a count of Altdorf and a member of the Swabian group of the Elder House of Welf. He was the son of Rudolf I, count of Altdorf, son of Henry, son of Eticho count of Ammergau, son of Welf I. He was married t ...

, who died around 990 and was — according to legend — a descendant of Welf. His son was Eticho, count of Ammergau (died after 911), who married Egila and had a son: * Henry, Count of the Golden Wagon; who married Atha von Hohenwart and had issue: ** Rudolf I, Count of Altdorf, who married siburgis and had a son: ***

Sources

The Elder House of Welf

Gallery

Wgt Stifterbüchlein 10r.jpg Welf I..jpg Elder House of Welf Counts of Germany 9th-century deaths Year of birth unknown {{Germany-noble-stub