Order of Charles III in the context of "Spanish monarchy"

An order of chivalry, order of knighthood, chivalric order, or equestrian order is a society, fellowship and college of knights, typically founded during or inspired by the original Catholic military orders of the Crusades (c. 1099–1291) and paired with medieval concepts of ideals of chivalry.

Since the 15th century, orders of chivalry, often as dynastic orders, began to be established in a more courtly fashion than could be created ad hoc. These orders would often retain the notion of being a confraternity, society or other association of members, but some of them were ultimately purely honorific and consisted of a medal decoration. In fact, these decorations themselves often came to be known informally as orders. These institutions in turn gave rise to the modern-day orders of merit of sovereign states.

The Spanish nobility are people who possess a title of nobility confirmed by the Spanish Ministry of the Presidency, Justice and Relations with the Cortes, as well as those individuals appointed to one of Spain's three highest orders of knighthood: the Order of the Golden Fleece, the Order of Charles III and the Order of Isabella the Catholic. Some members of the Spanish nobility possess various titles that may be inherited or not, but the creation and recognition of titles is legally the prerogative of the monarchy of Spain.

Many Spanish titles and noble families still exist and many have transmitted their aristocratic status since the Middle Ages. Some aristocratic families in Spain use the nobiliary particle de before their family name, although this was more prominent before the 20th century.

Grand Cross is the highest class in many orders, and manifested in its insignia. Exceptionally, the highest class may be referred to as Grand Cordon or equivalent. In other cases, there may exist a rank even higher than Grand Cross, e.g. Grand Collar. In rare cases, the insignia itself is referred to as the "grand cross".

The Order of the Bath, modified in 1815, had three grades, the foremost of which was Knight Grand Cross. The Spanish Order of Charles III, founded in 1771 initially had two classes, Knights Grand Cross and the Knights, or caballeros pensionados ("Pensioner Knights", or simply pensionados, "pensioners").

The Royal Order of Isabella the Catholic (Spanish: Real Orden de Isabel la Católica; Abbr.: OYC) is a knighthood and one of the three preeminent orders of merit bestowed by the Kingdom of Spain, alongside the Order of Charles III (established in 1771) and the Order of Civil Merit (established in 1926). It recognizes extraordinary services to the homeland or the promotion of international relations and cooperation with other nations, with a particular focus on the territories of the former Spanish Empire. By law, its Grand Master is the King of Spain, and its Grand Chancellor is the Minister of Foreign Affairs. The Order is open to both Spaniards and foreigners, particularly from the Spanish-speaking world.

The Order was created in 1815 by King Ferdinand VII in honor of Queen Isabella I as the Real y Americana Orden de Isabel la Católica ("Royal and American Order of Isabella the Catholic") with the intent of "rewarding the firm allegiance to Spain and the merits of Spanish citizens and foreigners in good standing with the Nation and especially in those exceptional services provided in pursuit of territories in America and overseas." The Order was reorganized by royal decree on 26 July 1847, with the name "Royal Order of Isabella the Catholic", reflecting the secession of the mainland possessions in the Americas after the Spanish American wars of independence.