Marie, Countess of Eu
|Died||1 October 1260
|Spouse||Alphonso of Brienne|
|Father||Raoul II of Lusignan|
|Mother||Yolande de Dreux|
Marie of Lusignan or Marie I de Lusignan (born c. 1223 in Melle; died in Poitou, 1 October 1260; buried at the Abbey of Foucarmont), was the only child of Raoul II of Lusignan and his second wife, Yolande de Dreux. She became Dame d'Issoudun, Countess of Eu and of Guinness in 1250.
Marie and Alphonso had at least two children:
- M. A. Pollock, Scotland, England and France After the Loss of Normandy, 1204-1296, (The Boydell Press, 2015), 147.
- M. A. Pollock, Scotland, England and France After the Loss of Normandy, 1204-1296, 183.