Family Relationship of

Sandra Day O'Connor

First Female U.S. Supreme Court Justice

23rd Great-granddaughter to

Roger le Bigod

Magna Carta Surety

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Roger le Bigod

Ida de Tony

Hugh le Bigod

Maud Marshal

Isabel le Bigod

Sir John FitzGeoffrey

Maud FitzJohn

William de Beauchamp

Guy de Beauchamp

Alice de Toeni

Sir Thomas de Beauchamp

Katherine de Mortimer

Maud de Beauchamp

Sir Roger de Clifford

Katherine de Clifford

Sir Ralph de Greystoke

Joan de Greystoke

Sir William Bowes

Sir William Bowes

Sir Ralph Bowes

Sir Ralph Bowes

Margery Bowes

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