Guillaume I de Coucy

Sir Guillaume I de Coucy (died 1335), Lord of Coucy, Oisy, La Fère, Marle and Montmirail.

Guillaume I de Coucy
Arms of Guillaume de Coucy: Barry of six, vair and gules
Born	c. 1288
Died	1335 (aged 46–47)

Biography

Guillaume was the son of Enguerrand V de Coucy and Christine de Lindsay.

Marriage and issue

Guillaume married secondly Isabelle, daughter of Guy IV de Chatillon and Marie de Bretagne, they are known to have had the following known issue.

• Enguerrand VI de Coucy (died 25 August 1346), Lord of Coucy, Marle, La Fère, Oisy and Montmirail, married Katharine of Austria, had issue.
• William II de Coucy (died 6 February 1342), Lord of Wyresdale, Lancashire and other lands in England, married Joan de Strother, died without issue.
• Jean de Coucy (died c.1357), Lord of Havrincourt, without issue.
• Raoul de Coucy (died 1389), Lord of Montmirail, La Ferté-Gaucher, Encre and Bailleul, married Jeanne de Harcourt, had issue.
• Aubert de Coucy, Lord of Drosnay, Droizy and Romeny, married Jeanne de Villesavoir, had issue.
• Guy de Coucy, died without issue.
• Jeanne de Coucy, married Gaucher de Chatillon, Vicomte de Blaigny; had issue:
• Marguerite de Coucy
• Catherine de Coucy
• Marie de Coucy
• Isabelle de Coucy

Sources

• Pollock, M.A. (2015). Scotland, England and France After the Loss of Normandy, 1204-1296: "Auld Amitie". The Boydell Press. ISBN 978-1-84383-992-7.
• Roger, Paul (1843). Noblesse et chevalerie du comté de Flandre, d'Artois et de Pacardie (in French). Duval et Herment. p. 38. Sires de coucy fascé de vair et de gueules.