François Charles was originally created by Jean Rancé, the son of the founder of the house of Rancé, François Rancé, to celebrate the birth of the King of Rome (1811-1832).
The Italian site of Rancé describes it as a strongly masculine fragrance that speaks to the person who loves nature. It is said to be like taking a stroll in a wood and gathering the notes emanating in succession from the plants, flowers, and wild herbs. The scent is said to deliver both intense aromas and to offer perpetually shifting olfactory impressions.
More information on Rancé 1795 here.
(Source: The European site of Rancé 1795)