Geoffrey I de Sémur-en-Brionnais

• Name	Geoffrey I de Sémur-en-Brionnais  [1, 2]
  Gender	Male
  Person ID	I24696	Ancestry of PNH, TNH, and others | Ancestor of DDB, Ancestor of GR, Ancestor of KL, Ancestor of LD, Ancestor of TNH, Ancestor of TSW, Ancestor of TWK
  Last Modified	31 May 2019

  
  

  Family	Mahaut de Châlon   d. Bef 1019
  Children	+ 1. Thibaut de Châlons   d. Abt 1065 + 2. Hervé I de Donzy   d. 1055
  Family ID	F14811	Group Sheet  |  Family Chart
  Last Modified	14 Apr 2026

  
  

• Notes

  Mentioned 1015.

  
  

• Sources

  [S49] Genealogics by Leo Van de Pas, continued by Ian Fettes and Leslie Mahler. [S91] The Henry Project: The Ancestors of King Henry II of England, by Stewart Baldwin, Todd A. Farmerie, and Peter Stewart.