This marriage in 1776 was extremely advantageous to the Grimaldi, as Louise's ancestress Hortense Mancini had been the heiress of Cardinal Mazarin.
Aceasta casatorie in 1776 a fost extrem de avantajoasa pentru cei din familia Grimaldi, deoarece ascendenta lui Louise, Hortensia Mancini era mostenitoarea cardinalului Mazarin.