Constance, Duchess of Brittany
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Constance was Duchess of Brittany from 1166 to her death in 1201 and Countess of Richmond from 1171 to 1201. Constance was the daughter of Duke Conan IV by his wife, Margaret of Huntingdon, a sister of the Scottish kings Malcolm IV and William I. Wikipedia
Born: June 12, 1161, Brittany, France
Died: September 5, 1201 (age 40 years), Nantes, France
Great-grandparents: Conan III, Duke of Brittany, Matilda FitzRoy, Duchess of Brittany, Stephen, Count of Tréguier, and more
Grandchildren: John I, Duke of Brittany, Yolande of Brittany, Philippa de Vitré, and more
Spouse: Guy of Thouars (m. 1199), Ranulf de Blondeville, 6th Earl of Chester (m. 1188), and Geoffrey II, Duke of Brittany (m. 1181)