Nielsen Hayden genealogy
Family: William de Briouze / Bertha of Hereford (F6214)
m. Abt 1150-
Father | Male
William de Briouze
Born Abt 1100 of Bramber, Sussex, England 
Died Abt 1180 Buried Married Abt 1150 [1, 2, 3] Father Philip de Briouze | F4296 Group Sheet Mother Aenor de Totnes | F4296 Group Sheet
Mother | Female
Bertha of Hereford
Born of Brecknock, Breconshire, Wales 
Died Buried Father Miles of Gloucester | F2097 Group Sheet Mother Sibyl de Neufmarché | F2097 Group Sheet
Child 1 | Male
+ William de Briouze
Born of Briouze, Normandy, France 
Died 9 Aug 1211 Corbeil, near Paris, France 
Buried Spouse Maud de St. Valéry | F2352 Married
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Sources - [S145] Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr. 8th edition, William R. Beall & Kaleen E. Beall, eds. Baltimore: Genealogical Publishing Company, 2004, 2006, 2008.
- [S128] The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant ed. Vicary Gibbs, H. A. Doubleday, Duncan Warrand, Howard de Walden, Geoffrey H. White and R. S. Lea. 2nd edition. 14 volumes (1-13, but volume 12 spanned two books), London, The St. Catherine Press, 1910-1959. Volume 14, "Addenda & Corrigenda," ed. Peter W. Hammond, Gloucestershire, Sutton Publishing, 1998.
- [S2158] Pedigree and Progress: Essays in the Genealogical Interpretation of History by Anthony Wagner. London: Phillimore & Co., 1975.
- [S145] Ancestral Roots of Certain American Colonists Who Came to America Before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr. 8th edition, William R. Beall & Kaleen E. Beall, eds. Baltimore: Genealogical Publishing Company, 2004, 2006, 2008.