Information sur la source
Ancestry.com. Sulgrave Manor and the Washingtons : a history and guide to the Tudor home of George Washington's ancestors [base de données en ligne]. Provo, UT: Ancestry.com Operations Inc, 2005.Données originales : Smith, H. Clifford. Sulgrave Manor and the Washingtons : a history and guide to the Tudor home of George Washington's ancestors. London: J. Cape, 1933.
