Nielsen Hayden genealogy
Family: William de Briouze / Bertha of Hereford (F6214)
m. Abt 1150-
Male
William de Briouze
Birth Abt 1100 of Bramber, Sussex, England 
Death Abt 1180 Burial Marriage Abt 1150 [1, 2, 3] Father Philip de Briouze | F4296 Group Sheet Mother Aenor de Totnes | F4296 Group Sheet
Female
Bertha of Hereford
Birth of Brecknock, Breconshire, Wales Death Burial Father Miles of Gloucester | F2097 Group Sheet Mother Sibyl de Neufmarché | F2097 Group Sheet
Male
+ William de Briouze
Birth of Briouze, Normandy, France Death 9 Aug 1211 Corbeil, near Paris, France Burial Spouse Maud de St. Valéry | F2352 Marriage
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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.