Elisabeth of France, by Villandrando. Isabel de Borbon, born Elisabeth to Henry IV & Marie de Medicis, was the wife of Philip IV of Spain. Elisabeth was a renowned beauty and a patroness of arts and theatre in Spain. Her son Carlos Balthasar died shortly after his 16th birthday prompting Philip to remarry due to Elisabeth's untimely death. Her daugther Marie-Therese would marry Louis XIV and her great-grandson would eventually take the throne of Spain.