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Matilda of Brienne

Matilda of Brienne was the daughter of John I of Brienne, Count of Eu, and Beatrice de Châtillon. In 1290 she married Alfonso de la Cerda, the disinherited Castilian claimant, and bore him seven children, including Luis de la Cerda and Alfonso ‘of Spain’.

References

  1. en.wikipedia.org/wiki/Alfonso_de_la_Cerda
  2. www.wikidata.org/wiki/Q75403076