Gillette was the daughter of unknown parents. The date and place of her birth have not been found.
She had two marriages/partners. Her first husband was Jean Beaumont, who she married in BEF 1647. The place has not been found. They had no known children.
Her second husband was André Robert, who she married on 22 JUN 1648 in Église Notre-Dame-de-Cougnes (Compnes, Coigne, Cognes, Cognehors), De La Rochelle, Aunis . They had no known children.