[1] In 1647 she was called by her brother Jules Mazarin, minister to Louis XIV with her sister and daughters, to settle at the French royal court because, under the protection of her brother, she would be able to marry her daughters to powerful men.
Mazzarini lived with the rest of the family, first at Aix-en-Provence, then in the palace of her brother and finally settled at the court of Queen Anne of Austria, in the apartment of the Marquise de La Rochefoucauld.
Courtiers, seeking to win the favor of powerful Mazarin, sought in every way to please both Laura and her family.
Unlike her sister Geronima who, in the words of the abbot of Choisy, "did not ever bother anyone," Laura was more ambitious.
Her brother managed to find good matches for the Martinozzis: Laura was married to Alfonso IV d'Este; Anna Maria to Armand, Prince of Conti.