Ancestry of
Thomas Jefferson

3rd U.S. President and Signer of the Declaration of Independence

Pedro I, King of Castile

View famous kin of Pedro I, King of Castile

• • 14th Great-grandfather of Thomas Jefferson — 17th Generation
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  • 101950 
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  Isabella of Castile (Ahnentafel No:50975 )

  • Notes: 

  • aka Pedro the Cruel

    King of Castile

• Sources for Pedro I, King of Castile

  • ¹ New England Historical and Genealogical Register, 1994, Vol. 148, p. 140.
  • ² The Genealogical Magazine: A Journal of Family History, Heraldry, and Pedigrees, Volume II, May, 1898 - April, 1899, London: Elliot Stock (1899), 161.