Guillaume I "Longsword," Duke of Normandy

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Guillaume I "Longsword," Duke of Normandy, son of Rollo "of Normandy," Princeps Nortmannorum (Leader of the Normans [of Rouen]) and Poppa, was born not on continental Europe, but some other place where the son of a Viking might be born, such as Britain, Ireland, Scandinavia, or an island held by the Vikings (Orkneys, Hebrides, Man, etc.)1,2 He died at Picquigny-sur-Somme, France, 17 December 942.1,2

Guillaume married (1) Sprota, whose ancestry is unknown (or not traced here);1,2 he married (2) Liégard de Vermandois, daughter of Heribert II, Count of Meaux, Soissons, & Vermandois and NN.1

For more information about Guillaume I "Longsword," Duke of Normandy, please see this Wikipedia article.

Family 1


Family 2

Liégard de Vermandois d. 985


  1. [S1954] Stewart Baldwin, The Henry Project: The Ancestors of King Henry II of England: An Experiment in Cooperative Medieval Genealogy on the Internet,, accessed 14 Aug 2016. Hereinafter cited as Baldwin, The Henry Project.
  2. [S89] Frederick Lewis Weis, Walter Lee Sheppard Jr. and David Faris, Ancestral Roots of Certain American Colonists Who Came to America before 1700. . . ., 7th ed. (Baltimore, Maryland: Genealogical Publishing, 1992), 121E-19, further cited as Weis, Sheppard, and Faris, Ancestral Roots, 7th ed.
  3. [S89] Weis, Sheppard, and Faris, Ancestral Roots, 7th ed., 121E-20.
This person was last edited on27 Dec 2017