Family Relationship of

A. Bartlett Giamatti

Major League Baseball Commissioner

22nd Great-grandson to

Gilbert de Clare

Magna Carta Surety

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Gilbert de Clare

Isabel Marshal

Sir Richard de Clare

Maud de Lacy

Roese de Clare

Sir Roger de Mowbray

Sir John de Mowbray

John de Mowbray

Eleanor Mowbray

Joan de la Warre

Sir Reynold West

Mary West

Roger Lewknor

Edmund Lewknor

Elizabeth Lewknor

Thomas Stoughton

Sir Lawrence Stoughton

Rose Ive

Anthony Stoughton

Rose Stoughton

Anne Otis

Nathaniel Austin

Nathaniel Austin

Nathaniel Austin

Anna Austin

Matilda Buffum

Sarah Elizabeth Burleigh

James Thomas Davidson

Helen Buffum Davidson

Bartlett Walton

Mary Claybaugh Walton

Valentine John Giamatti

A. Bartlett Giamatti

Major League Baseball Commissioner