Events
Date of Birth: unknown.
Date of Death: unknown.
Relationships
Father: Miles of Gloucester (died 1143).
This relationship is given by Turner (ODNB), by the Complete Peerage (1:21), and by Cawley, who cites Dugdale (IV “Priory of Bergavenny, or Abergavenny, in Monmouthshire” Num. I), a history and genealogy of the founders of the Priory which names Bertha as a daughter of Miles: “...Qui comes Milo duxit in uxorem Sibillam, legitimam hæredem totius terræ Breconiæ, scilicet, Bernardi et Agnetis de Novo-Mercato: de qua genuit v. filios, scilicet, Rogerum comitem, Henricum, Walterum, Maiel, et Willielmum; et tres filias, scilicet, Margaretam, Bertam, et Luciam”.
Mother: Sibyl de Neufmarché. Married in 1121.
This relationship is given by Cawley.
Spouse: William de Briouze.
This relationship is given by Turner (ODNB) and the Complete Peerage (1:21). The date is given by the Complete Peerage. Cawley cites Dugdale (III “Priory of Brecon, or Brecknock, in Wales” Num. I), which gives this relationship.
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project.)
William de Briouze (died 1211) married Matilda de St Valéry.
Sibyl de Briouze married William de Ferrers, third earl of Derby.
References
Cawley, Charles. “Bertha” in Medieval Lands.
Cokayne, George Edward, and Vicary Gibbs; et al. The complete peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct, or dormant [2nd ed.]. (London: St. Catherine Press, 1910-59) Volume 1.
Dugdale, William. Monasticon Anglicanum (London 1817-1830).
Turner, Ralph V. “Briouze, William (III) de (d. 1211)” in The Oxford Dictionary of National Biography (Oxford University Press, 2004).