Ancestry of
Barack Obama

44th U.S. President

William de Ros

View famous kin of William de Ros

• • 23rd Great-grandfather of Barack Obama — 26th Generation
  • Ahnentafel No:
  • 50528578 
  • Father:
  • William de Ros 
  • Mother:
  • Lucy FitzPiers   
  • Birth Date:
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  • Spouse Name:
  • Eustache Fitz Ralph
  • Marriage Date:
  • BEF 1290 
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  Lucy de Ros

  Alice de Ros (Ahnentafel No:25264289 )

  Ivetta de Ros

  • Notes: 

  • Sir William de Ros's surname is also seen as Roos.

• Sources for William de Ros

  • ¹ Richardson, Douglas, Royal Ancestry: A Study in Colonial and Medieval Families, Salt Lake City, Utah: Douglas Richardson (2013), Vol. III, p. 312.
  • ² Richardson, Douglas and Kimball G. Everingham, editor, Magna Carta Ancestry: A Study in Colonial and Medieval Families, 2nd edition, Salt Lake City, Utah: Douglas Richardson (2011), Vol. 2, p. 139.
  • ³ Richardson, Douglas and Kimball G. Everingham, editor, Magna Carta Ancestry: A Study in Colonial and Medieval Families, 2nd edition, Salt Lake City, Utah: Douglas Richardson (2011), Vol. 4, p. 204.
  • ⁴ Roberts, Gary Boyd, The Royal Descents of 600 Immigrants to the American Colonies or the United States (2 vols.), Baltimore: Genealogical Publishing Co. (2008), 416, 431.
  • ⁵ Roberts, Gary Boyd, comp., Ancestors of American Presidents, 2009 Edition, Boston: New England Historic Genealogical Society (2009), 399.
  • ⁶ Society of Antiquaries of Newcastle-upon-Tyne, Archaelogia Aeliana: or Miscellaneous Tracts Relating to Antiquity, Series 3, Vol. I, Newcastle-upon-Tyne: R. Robinson & Company (1904), 64.
  • ⁷ Stapleton, Thomas, ed., Plumpton Correspondence: A Series of Letters ... in the Reigns of Edward IV, Richard III, Henry VII, and Henry VIII, New York: Johnson Reprint Corporation (1889), xx.
  • ⁸ Stephen, Sir Leslie and Sir Sidney Lee, Dictionary of National Biography, Volume 17, New York: The Macmillan Company (1909), 1073.
  • ⁹ The William Salt Archaeological Society, Collections for a History of Staffordshire, Vol. 19, Vol. 1 New Series, London: Harrison and Sons (1898), 211.