The Countess of Olivares, who was also chief lady-in-waiting to the Queen, worked as a governess to the prince, which gave rise to comments about the control that the Count-Duke of Olivares had on the heir.
A propia condesas de Olivares, que tamén era Camareira maior da raíña Isabel, exerceu como aya do príncipe, o que deu lugar a comentarios sobre o control que o conde-duque de Olivares exercía sobre o herdeiro.