As was quite norm at the time, the 2nd and 3rd sons not expected to be involved with succession, Leopold was at first educated for the priesthood.
It was believed that his hostility towards the church came as a result of the forced and strict theological studies to which he was forced to apply himself are believed to have influenced him against the Church.
Just as his parents, he also had 16 children.
On the death of his elder brother, Charles Joseph, in 1761, it was decided that he should succeed to his father's grand duchy of Tuscany which was created to an apanage especially for a second son. Of course, this was also created as a condition to his marriage on 5 August 1764 with Maria Luisa of Spain, daughter of Charles III of Spain.
On the death of his father in 1765, he succeeded to the grand duchy.
Leopold was famous in Florence for his numerous extra-
Among his lovers was Countess Cowper, wife of the 3rd Earl Cowper, who was given honours by Leopold’s brother, Joseph ll, in compensation of his humiliation.