Finally in 1642 the couple had another son named Cosimo de' Medici who was styled the Grand Prince of Tuscany. Under the influence of their mother, her children also received a deeply Roman Catholic education, and arguments between the Grand Ducal couple were sparked when there was a disagreement about the education of the Grand Prince.
In 1642, they had another son named Cosimo de' Medici who was styled the Grand Prince of Tuscany. Their mother's influence led to a deeply Roman Catholic upbringing for her children, and disputes frequently arose between the Grand Ducal couple concerning the education of the Grand Prince.