Harriette Dubouchet was one of the fifteen children of Swiss John James Dubouchet (or De Bouchet), who kept a small shop in Mayfair, England, and his wife Amelia, née Cook. Her father is said to have assumed the surname of Wilson about 1801. She began her career at the age of fifteen, becoming the mistress of William Craven, 1st Earl of Craven, 7th Baron Craven. Among her other lovers was Arthur Wellesley, 1st Duke of Wellington, who commented "publish, and be damned" when informed of her plans to write her memoirs. The memoirs are still in print.

Her sisters Amy, Fanny and Sophia also became courtesans. Sophia married respectably into the aristocracy, when she wed Lord Berwick, at 17.