Family Relationship of

King Henry III

King of England

4th cousin 13 times removed to

[What does "times removed" mean?]

Robert Catesby

Leader of Gunpowder Plot

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Malcolm III of Scotland

St. Margaret of Scotland

Maud of Scotland

Henry I, King of England

David I, King of Scotland

Maud of Northumberland

Maud of England

Geoffrey Plantagenet

Henry of Huntingdon

Ada de Warenne

Henry II, King of England

Eleanor of Aquitaine

William I, King of Scotland

- - - - - - Avenal

John, King of England

Isabelle of Angoulême

Isabel of Scotland

Robert de Ros

King Henry III

King of England

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