Family Relationship of

Isabelle of Angoulême

(c1188–1246)

23rd Great-grandmother to

Sandra Day O'Connor

First Female U.S. Supreme Court Justice

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Isabelle of Angoulême

John, King of England

Henry III, King of England

Eleanor of Provence

Edward I, King of England

Eleanor of Castile

Edward II, King of England

Isabella of France

Edward III, King of England

Philippa of Hainault

John of Gaunt

Katherine Roet

Joan Beaufort

Sir Robert de Ferrers

Elizabeth Ferrers

Sir John de Greystoke

Eleanor Greystoke

Sir William Eure

Sir Ralph Eure

Sir William Eure

Sir Ralph Eure

Anne Eure

John Mansfield

Elizabeth - - - - - -

Elizabeth Mansfield

Rev. John Wilson

Mary Wilson

Rev. Samuel Danforth

Rev. Samuel Danforth

Mary Danforth

Jacob Barney

Silence Barney

Lettice Carlyle Cobb

Hollis Day

Henry Clay Day

Henry R. Day

Sandra Day O'Connor

U.S. Supreme Court Justice