By her father she was an aristocrat and related to the reigning houses.

Her ancestor was the King of Poland, Augustus II, the lover of the
beautiful Countess Aurora von Koenigsmarck. George Sand's grandfather
was Maurice de Saxe. He may have been an adventurer and a _condottiere_,
but France owes to him Fontenoy, that brilliant page of her history.
All this takes us back to the eighteenth century with its brilliant,
gallant, frivolous, artistic and profligate episodes. Maurice de Saxe
adored the theatre, either for itself or for the sake of the women
connected with it. On his campaign, he took with him a theatrical
company which gave a representation the evening before a battle. In this
company was a young artiste named Mlle. de Verrieres whose father was
a certain M. Rinteau. Maurice de Saxe admired the young actress and a
daughter was born of this _liaison_, who was later on recognized by
her father and named Marie-Aurore de Saxe. This was George Sand's
grandmother. At the age of fifteen the young girl married Comte de Horn,
a bastard son of Louis XV. This husband was obliging enough to his wife,
who was only his wife in name, to die as soon as possible. She then
returned to her mother "the Opera lady." An elderly nobleman, Dupin de
Francueil, who had been the lover of the other Mlle. Verrieres, now
fell in love with her and married her. Their son, Maurice Dupin, was
the father of our novelist. The astonishing part of this series
of adventures is that Marie-Aurore should have been the eminently
respectable woman that she was. On her mother's side, though, Aurore
Dupin belonged to the people. She was the daughter of Sophie-Victoire
Delaborde milliner, the grandchild of a certain bird-seller on the
Quai des Oiseaux, who used to keep a public-house, and she was the
great-granddaughter of Mere Cloquart.