Family Relationship of

A. Bartlett Giamatti

Major League Baseball Commissioner

23rd Great-grandson 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

Isabella de Beauchamp

Sir Patrick de Chaworth

Maud de Chaworth

Henry Plantagenet

Eleanor Plantagenet

Richard Fitzalan

John Fitzalan

Eleanor Maltravers

Joan Fitzalan

Sir William Echyngham

Joan Echyngham

Sir John Bayntun

Henry Bayntun

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Jane Bayntun

Mary Prowse

Robert Gye

Mary Gye

Elias Maverick

Sarah Maverick

John Walton

Josiah Walton

Timothy Walton

James Walton

Daniel G. Walton

Elizabeth Jeanette Aborn

Arthur Gould Walton

Mary Ellen Bartlett

Bartlett Walton

Helen Buffum Davidson

Mary Claybaugh Walton

Valentine John Giamatti

A. Bartlett Giamatti

Major League Baseball Commissioner