Ancestry of
Calvin Coolidge

30th U.S. President

Robert de Ros

View famous kin of Robert de Ros

• • 24th Great-grandfather of Calvin Coolidge — 27th Generation
  • Ahnentafel No:
  • 129280416 
  • Father:
  • Peter de Ros 
  • Mother:
  • Adeline L'Espec   
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  • Sybil de Valoines
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  Everard Ros (Ahnentafel No:64640208 )

• Sources for Robert de Ros

  • ¹ Taylor, Rev. R. V., "Ribston and the Knights Templar", The Yorkshire Archaeological Journal, Volume 7 (1882), 432.
  • ² Wikipedia, "Everard de Ros", (accessed 03/21/2010).