Upon reaching the age of majority, she or he must take an oath before the Cortes Generales to faithfully carry out her duties, to keep and enforce the Constitution and laws, and to respect the rights of citizens and autonomous communities, as well as show fidelity to the King, according to Article61 of the constitution. This procedure was introduced in 1978 since, before the promulgation of this constitution, the Princes of Asturias had to receive the oath of allegiance from the Cortes. The current titular of the Principality is Leonor, who took that dignity on 19June 2014, when her father, King Felipe VI, ascended to the throne following the abdication of her grandfather King Juan Carlos I.