Agustín de Iturbide y Green (2 April 1863 – 3 March 1925) was the grandson of Agustín de Iturbide, the first emperor of independent Mexico, and his consort Ana María Huarte. He became the adopted son with the title of Prince of Iturbide, along with his cousin Salvador de Iturbide y de Marzán, of Mexico's only other royal heads of state, Emperor Maximilian I of Mexico and Empress Carlota of Mexico. After the death of Emperor Maximilian in 1867, he became the head of the Imperial House of Mexico, but he had no children. His claims passed to Maria Josepha Sophia de Iturbide, the daughter of his cousin, Salvador. Iturbide was the son of Emperor Agustin's second son, Prince Don Ángel María de Iturbide y Huarte (2 October 1816 – 21 July 1872). His mother was Alice Green (c. 1836–1892), daughter of Captain John Nathaniel Green, granddaughter of United States congressman and Revolutionary War General Uriah Forrest, and great-granddaughter of George Plater, Governor of Maryland. When Maximilian and Carlota ascended the throne of Mexico in 1863 with the support of the French troops of Napoleon III, the childless new monarchs invited the Iturbide family back to Mexico. As it was clear several years into their marriage that Maximilian and Carlota could have no children together, they offered to adopt Iturbide, which was agreed to with enthusiasm by his father and reluctance by his mother. Iturbide and his cousin were granted the vitalicio (meaning non-hereditary) title of Prince de 

Iturbide and style of Highness by imperial decree of 16 September 1865 and were ranked after the reigning family. Apparently, the royal couple intended to groom Agustín as heir to the throne.[citation needed] Maximilian never really intended to give the crown to the Iturbides because he believed that they were not of royal blood. It was all a charade directed at his younger brother Archduke Karl Ludwig of Austria, as Maximilian explained himself: either Karl would give him one of his sons as an heir, or else he would bequeath everything to the Iturbide children. With the overthrow of the second Mexican Empire in 1867, Iturbide's biological parents took him first to England and then back to the United States, where they settled in Washington, DC. When he came of age, Iturbide, who had graduated from Georgetown University, renounced his claim to the throne and title and returned to Mexico. He then served as an officer in the Mexican army. But in 1890, after publishing articles critical of President Porfirio Díaz, he was arrested on charges of sedition and sentenced to fourteen months of imprisonment. After release from prison, Iturbide was sent into exile, where he had two severe nervous breakdowns that resulted in his believing that he would be assassinated. Eventually, he returned to Georgetown University, as a professor of the Spanish and French languages.

The Palatine Guard of Mexico. When Archduke Maximilian von Hapsburg became Emperor of Mexico in 1864 he spent his voyage across the Atlantic planning the details of his court. He was determined that the Mexican Empire would be the most ornate, well ordered and glamorous monarchy in the New World. Of course, no such monarchy would be complete without an imperial palace guard and so, orders were drawn up for a company of Palatine Guards. The uniform of the guard was somewhat Germanic in style but was certainly the most colorful in the Mexican Imperial Army. Full dress included a red tunic with white and green trim, white leather breeches with black thigh-high leather boots, white leather gloves and a silver helmet topped by a Mexican eagle. Troops were armed with a sword and halberd for ceremonial duties guarding the National Palace, Chapultapec Castle and protecting the Emperor. The troops were foreigners and beards were virtually regulation. Count Karl de Bombelles was made commandant of the guard who could also been called on for combat duty. On such occasions they wore an undress uniform of a green frock coat with scarlet cuffs, green trousers and a white French style kepi. Unfortunately, when Emperor Maximilian marched off to his last stand at Queretaro he left all of his remaining foreign troops behind, including the Palatine Guard. As a result 

they were not on hand for his capture and were surrendered almong with Mexico City to the republican forces of General Porfirio Diaz.

The House of Iturbide (Spanish: Casa de Iturbide) is a former Imperial House of Mexico. It was founded by the Sovereign Mexican Constituent Congress on 22 June 1822 when the newly independent Mexican congress confirmed Agustín I's title of Constitutional Emperor of Mexico. He was baptized with the names of Saints Cosmas and Damian at the cathedral there. The last name Iturbide was originally from the Basque Country, Spain. Emperor Agustín abdicated and lived in exile with the prohibition on returning to Mexico. Despite that ban, he returned, was captured, and executed. Grandchildren of Emperor Agustín were adopted by Maximilian I of Mexico (1864-67), who had no biological children, and granted some status in the empheral Second Mexican Empire. In 1863, the Mexican Conservative Party, with the support of Napoleon III of France, attempted to establish a new monarchy under Austrian Hapsburg Archduke Ferdinand Maximilian as Emperor Maximilian I of Mexico. Maximilian, who had no natural offspring, adopted two grandsons of the first Mexican emperor, Agustín de Iturbide y Green and Salvador de Iturbide y Marzán. Agustín and Salvador were each granted the vitalicio (meaning non-hereditary) title of Prince de Iturbide 

and style of Highness by imperial decree and followed in rank after the reigning family. The forces of the Mexican Republic captured and executed Emperor Maximilian in 1867, ending monarchy in Mexico.