Marie, Countess of Eu

Marie
Reign	1250–1260
Born	c. 1223
Died	1 October 1260 Poitou
Spouse	Alphonso of Brienne
Issue	John I
Father	Raoul II of Lusignan
Mother	Yolande de Dreux
Religion	Roman Catholicism

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.

She was married around 1249 to Alphonso of Brienne. Alphonse was Count of Eu by marriage.

Marie and Alphonso had at least two children:

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