William I (aka Guillaume) Longsword, Count of Rouen
893 - 942 (49 years)
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- 1 William I (aka Guillaume) Longsword, Count of Rouen [1] b. 893 d. 17 Dec 942
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- 2 Richard I, Jarl of Rouen [1.1] b. 28 Aug 932 d. 20 Nov 996
- Gunnor de Crêpon
- 3 Richard II [1.1.1] b. Abt. 963 d. 28 Aug 1026
- Judith de Bretagne
- 4 Robert I, Duke of Normandy [1.1.1.1] b. 22 Jun 1000 d. 3 Jul 1035
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- 4 Robert I, Duke of Normandy [1.1.1.1]
- 3 Richard II [1.1.1]
- 2 Richard I, Jarl of Rouen [1.1]