Alfonso, Prince of Asturias (10 May 1907 – 6 September 1938), was heir apparent to the throne of Spain from birth until the abolition of the monarchy in 1931. He renounced his rights to the defunct throne in 1933. Alfonso was the eldest son of King Alfonso XIII of Spain and his wife Victoria Eugenie of Battenberg.
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 and holds the titles inherent to that position, recognized in the article 57.1 of the Constitution, and which symbolize the Spanish dynastic union.
Alfonso, Prince of Asturias: 1907–1938 Alfonso XIII of Spain: Alfonso XIII was deposed by the formation of the Second Spanish Republic on April 14, 1931. Prince Alfonso renounced his claim on 21 June 1933 so he could marry a commoner Friedrich Franz, Hereditary Grand Duke of Mecklenburg-Schwerin: 1910–2001
Alfonso, Príncipe de Asturias: 1857: 1885: Futuro Alfonso XII, Rey de España. Octavo Gran Maestre de la Rama Española desde 1870 1859: Infante Fernando de España: 1859: 1872: Sobrino de Isabel II Príncipe Luis Fernando de Baviera: 1859: 1949: Yerno de Isabel II. Hijo del Príncipe Adalberto de Baviera y nieto de Luis I, Rey de Baviera 1860
Leonor, Princesa das Astúrias (em castelhano: Leonor de Todos los Santos de Borbón y Ortiz; Madrid, 31 de outubro de 2005)  é a herdeira do trono espanhol e atual Princesa das Astúrias. É a filha mais velha do rei Filipe VI e da rainha Letícia da Espanha.
On 10 May 1907, the couple's first child, Alfonso, Prince of Asturias, was born. Victoria was in fact a haemophilia carrier, and Alfonso inherited the condition. Neither of the two daughters born to the King and Queen were haemophilia carriers, but another of their sons, Gonzalo (1914–1934), had the condition.
Filippo VI (in spagnolo Felipe VI; nome completo: Felipe Juan Pablo Alfonso de Todos los Santos de Borbón y Grecia) (Madrid, 30 gennaio 1968) è l'attuale Re di Spagna.. È il terzo figlio del re di Spagna Juan Carlos I e di Sofia di Grecia.