Agustín Muñoz, 1st Duke of Tarancón

Monument of Three Children, an homage to the three sons of Queen Marie Christine who died in French exile, in the cemetery of Rueil-Malmaison. Sculptor: Felipe Moratilla y Parreto

Don Agustín Maria Muñoz y de Borbon, 1st Duke of Tarancón, Grandee of Spain (es: Don Agustín Maria Muñoz, duque de Tarancón) (15 March 1837 – 15 July 1855) was the eldest son of Maria Christina, Regent of Spain, and of her morganatic husband Agustín Fernando Muñoz, 1st Duke of Riánsares.

Muñoz was born in Madrid while his mother was still Regent of Spain and his parents' marriage was not publicly known. In 1840 Muñoz went with his parents into exile in France. In 1842 his mother purchased the Château de Malmaison where Muñoz and his siblings grew up.

In 1844 Muñoz's half-sister Queen Isabella II of Spain was declared to be of age. On 19 November 1847 Isabella gave to Muñoz the title duque de Tarancón to which was attached a Grandeza de España. On 10 June 1849 she gave Muñoz a second title, vizconde de Rostrollano.

In 1846 Muñoz became a candidate for the throne of Ecuador. The proposal was made by Juan José Flores, former President of Ecuador, and consisted of two parts: the first one was declare him as King of Ecuador, with his mother and Flores as Regents, and then as Restorer of the monarchy in Perú and Bolivia, converting him in the monarch of the tentative United Kingdom of Ecuador, Perú and Bolivia. The child was referred to in the Spanish press as Prince of the Antilles, and as Prince of Ecuador by his mother. While at first the proposal received some support from the Spanish and British governments, it collapsed.

Muñoz died in 1855 at Malmaison at the age of 18. His remains were buried in a tomb in the cemetery at Rueil-Malmaison.[1]