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Jean de Coucy

Jean de Coucy (died 1354) was a son of Guillaume I de Coucy and Isabelle de Châtillon. He was castellan of Havrincourt and died without issue.

References

  1. en.wikipedia.org/wiki/Guillaume_I_de_Coucy
  2. fr.wikipedia.org/wiki/Guillaume_Ier_de_Coucy