The Grosvenor family motto 'Virtus non Stemma' (Virtue not Ancestry) stresses above all the maxim that it is what you do which matters, not who were your ancestors.

With such a long recorded history, and with many twists and turns, the Grosvenor family tree is a complex but fascinating document. This representation of it illustrates the descent of the present Duke from his Norman ancestor Gilbert le Grosveneur.

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