
Maria Antonia of Naples and Sicily, Princess of Asturias. She was one of the daughters of Maria Carolina, and was likely named for her mother’s favourite sister, Marie Antoinette.
(I love that there’s a front AND a back to this miniature. I’ve never seen one done like this before!)
Maria Antonia married Fernando VII in 1802 when he was Prince of Asturias and was the last Princess consort of Asturias for over two centuries. Doña Letizia became Princess consort in 2004 ending María Antonia’s “reign”.
(While the Countess of Barcelona and Queen Sofía have been styled as Princess consort of Asturias those were titles in pretense)
The Infante Don Carlos, cousin of His Majesty and one of the two claimants to the Headship of the House of the Two-Sicilies, has decreed that his eldest grandson, Prince Jaime de Borbón-Dos Sicilias, heir of the Infante’s only son Prince Pedro, will be known as the Duke of Capua.
Infantas of Spain→ CARLOTA

The duke and duchess of Calabria (nee Pss Anne of France). 1960s.
Curious fact of this couple: They, as other royals such as Anne Marie of Denmark and Constantinos of Greece, fell in love in Pss Sophie of Greece marriage with Don Juan Carlos, prince of Asturias, 1962. Diana was one of Sofia´s bridesmaid.
I think you meant that Anne was a bridesmaid, not her sister ;)

The Countess of Barcelona

Members of the Royal Family at the Baptism of HRH the Infanta Beatriz, daughter of King Alfonso XIII in 1913.
(The Infanta Isabel (La Chata), Infanta Beatriz (Baby Bee), Infanta Luisa, Queen María Cristina (Crista), Infante Alfonso, Infante Alfonso de Orléans (Ali) and King Alfonso XIII)

Juan Carlos I of Spain-75 Years, 75 Photos.
35-Prince Juan Carlos (R) dancing with Peruvian girl and his mother Dona Maria Mercedes (L) dancing with British captain at ball.

HRH Doña María de Borbón-Dos Sicilias y Orléans, the Countess of Barcelona.

Her Royal Highness Princess Teresa of Bourbon-Two Sicilies, Marchioness of Laserna.
Doña Teresa, the first child of the late Infante D. Alfonso and the Infanta Doña Alicia and the eldest sister of the Infante D. Carlos, current Duke of Calabria, was born in Switzerland in 1937. Her Royal Highness married the 12th Marquess of Laula (who would become the Marquess of Laserna in 2010) in 1961 in Madrid. They had seven children; unfortunately the fifth child, don Fernado Moreno y Borbón died in a motorcycle accident in May 2011.

Wedding Of Princess Maria Teresa de Borbón-Dos Sicilias To The Marquis Of Laula
Doña Teresa was the first child of the late Infante D. Alfonso and the Infanta Doña Alicia and the eldest sister of the Infante D. Carlos, the Duke of Calabria. King Juan Carlos created her husband, Don Iñigo Moreno de Arteaga, Ist Marquis of Laserna in 2010.
(Source: royalwatcher, via royalrumormonger)