Margaret of Lusignan

Margaret of Lusignan (c. 1226–1288) was the daughter of Hugh X, count of La Marche, and Isabella of Angoulême, widow of King John of England, making her a half-sister of Henry III. In 1243 she married Raymond VII of Toulouse, but the Council of Lyons granted them a divorce in 1245.

She then wed Aimery IX, viscount of Thouars, and bore him Guy II. After Aimery died in 1256 she married Geoffrey VI of Châteaubriant. She died in 1288.