Family Relationship of

William III of Aquitaine

(0915–0963)

20th Great-grandfather to

Robert Catesby

Leader of Gunpowder Plot

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William III of Aquitaine

Adele of Normandy

Adelaide of Aquitaine

Hugh Capet

Robert II, King of France

Constance of Arles

Henry I, King of France

Anne of Kiev

Hugh I of Vermandois

Adéle of Vermandois

Isabel de Vermandois

William de Warenne

Ada de Warenne

Henry of Huntingdon

William I, King of Scotland

- - - - - - Avenal

Isabel of Scotland

Robert de Ros

Sir William de Ros

Lucy FitzPiers

Sir Robert de Ros

Isabel de Aubeney

William de Ros

Maude de Vaux

Sir William de Ros

Margery de Badlesmere

Elizabeth de Roos

Sir William la Zouche

Sir William la Zouche

Agnes Greene

Sir William la Zouche

Elizabeth - - - - - -

William Zouche

Elizabeth St. John

Margaret Zouche

William Catesby

George Catesby

Elizabeth Empson

Sir Richard Catesby

Dorothy Spencer

William Catesby

Katherine Willington

Sir William Catesby

Anne Throckmorton

Robert Catesby

Leader of Gunpowder Plot