Joseph Lieutaud was born on 21 June 1703 at 31 Rue Cardinale in Aix-en-Provence.
[1][2] His father was Jean-Baptiste Lieutaud, a lawyer, and his mother, Louise (de) Garibel.
[1][2] He started studying botany, following in the wake of his uncle, Pierre Joseph Garidel, and went on to be called upon as a doctor in the Hotel-Dieu in Aix-en-Provence.
[3] By 1750, he became a doctor in the royal infirmary, then a pediatrician to the Louis XV court, and eventually the personal physician of King Louis XVI.
[1] His Précis de médecine pratique, published in four instalments (between 1760 and 1776), shows how forward-thinking medical sciences were at that time.