Editing Prince of Asturias (section)

==Titles and functions==
The Prince of Asturias, as [[crown prince]], is the first in the [[Line of succession to the Spanish throne]], receives the treatment of [[Royal Highness]] by Royal Decree 1368/1987<ref>{{cite book|url=http://www.boe.es/boe/dias/1987/11/12/pdfs/A33717-33717.pdf|title=Real Decreto 1368/1987, de 6 de noviembre, sobre régimen de títulos, tratamientos y honores de la Familia Real y de los Regentes|language=es|publisher=[[Boletín Oficial del Estado]], n° 271, 12 November 1987|page=33717}}</ref> and holds the titles inherent to that position, recognized in the article{{nbsp}}57.1 of the Constitution,<ref name="Constitution"/> and which symbolize the Spanish dynastic union.<ref name="Coronas73"/> In addition to the principal of Prince of Asturias (as heir of the [[Crown of Castile]]),<ref name="Coronas53"/> the heir also has the following titles:

* [[Prince of Girona]], [[Duke of Montblanc]], [[Count of Cervera]], and [[Lord of Balaguer]] as the heir of the [[Crown of Aragon]],<ref name="Anguera86">Anguera Nolla 2008, p. 86.</ref><ref>Ferrando Badía 1990, p. 13.</ref> with origins in 1351, 1387, 1353, and 1418, respectively.
* [[Prince of Viana]], as the heir of [[Kingdom of Navarre]],<ref name="Anguera86"/> with origin in 1424.

He also presides over the Princess of Asturias and Princess de Girona Foundations, named Prince of Asturias and Prince of Girona when the heir is male.<ref>[http://www.fpa.es/es/fundacion/estatutos/ "Estatutos" in: ''Fundación Princesa de Asturias'' (in Spanish)] [retrieved 13 December 2016].</ref><ref>[http://es.fpdgi.org/quienes-somos/estructura/presidencia-de-honor/ "Presidencia de Honor" in: ''Fundación Princesa de Asturias'' (in Spanish)] [retrieved 13 December 2016].</ref>

Upon reaching the age of majority, she or he must take an oath before the {{Lang|es|[[Cortes Generales]]|italic=no}} 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 Article{{nbsp}}61 of the constitution.<ref name="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.<ref name="rtve">[http://www.rtve.es/noticias/20140619/leonor-empieza-ser-princesa-se-prepara-para-llegar-reinar/949161.shtml ''Leonor, la niña que empieza a ser princesa'' in: www.rtve.es (in Spanish)] [retrieved 13 December 2016].</ref> The current titular of the Principality is [[Leonor, Princess of Asturias|Leonor]], who took that dignity on 19{{nbsp}}June 2014, when her father, King [[Felipe VI of Spain|Felipe VI]], ascended to the throne following [[Abdication of Juan Carlos I|the abdication of her grandfather]] [[King Juan Carlos I of Spain|Juan Carlos I]].<ref name="rtve"/>