Family Relationship of

Joan of Acre

(1272–1307)

20th Great-grandmother to

Willis Carrier

Inventor of Air Conditioning

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Joan of Acre

Sir Gilbert de Clare

Margaret de Clare

Hugh de Audley

Margaret de Audley

Ralph de Stafford

Elizabeth de Stafford

John de Ferrers

Robert de Ferrers

Margaret Despencer

Phillippa Ferrers

Sir Thomas Greene

Elizabeth Greene

William Raleigh

Sir Edward Raleigh

Margaret Verney

Sir Edward Raleigh

Bridget Raleigh

Elizabeth Cope

Bridget Dryden

Catherine Marbury

John Scott

Sylvanus Scott

Catherine Scott

Martha Jenckes

Sarah Harris

Dr. Harris Otis

Lydia Otis

Ann Elizabeth Button

David Joy Haviland

Elizabeth R. Haviland

Duane Williams Carrier

Willis Carrier

Inventor of Air Conditioning