Ancestry of
John Ritter

TV and Movie Actor

Isabel Ros

View famous kin of Isabel Ros

• • 20th Great-grandmother of John Ritter — 23rd Generation
  • Ahnentafel No:
  • 7868663 
  • Father:
  • William de Ros 
  • Mother:
  • Eustache Fitz Ralph   
  • Birth Date:
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  • Birth Location:
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  • Christening Date:
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  • Christening Location:
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  • Death Date:
  • 1309 
  • Death Location:
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  • Spouse Name:
  • Marmaduke de Thweng
  • Marriage Date:
  • ABT 1273 
  • Marriage Location:
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  • Child:

  Katherine de Thweng (Ahnentafel No:3934331 )

  • Notes: 

  • Isabel Ros's maiden name is also seen as Roos.

• Sources for Isabel Ros

  • ¹ 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, pp. 191-193.