Infanta Elena, Duchess of Lugo
HRH The Duchess of Soria and Hernani HE The Duke of Soria and Hernani
Infanta Elena, Duchess of Lugo is the first child and elder daughter of Juan Carlos I of Spain and Queen Sofa of Spain, and third in the line of succession to the Spanish throne. She has a younger sister, Infanta Cristina, and a younger brother, King Felipe VI.
Source: Wikipedia