Ancestry of
Grace Slick

Singer, Songwriter - Jefferson Airplane

Marmaduke de Thweng

View famous kin of Marmaduke de Thweng

• • 18th Great-grandfather of Grace Slick — 21st Generation
  • Ahnentafel No:
  • 1315062 
  • Father:
  • Marmaduke de Thweng 
  • Mother:
  • Lucy de Brus   
  • 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:
  • BY 26 Feb 1322/1323 
  • Death Location:
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  • Burial Date:
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  • Burial Location:
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  • Spouse Name:
  • Isabel Ros
  • Marriage Date:
  • ABT 1273 
  • Marriage Location:
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  • Child:

  Katherine de Thweng (Ahnentafel No:657531 )

  • Notes: 

  • 1st Lord Thweng

• Sources for Marmaduke de Thweng

  • 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. 192-193.