Toledo Cathedral in the context of Urban II

The Holy League (Latin: Liga Sancta, Spanish: Liga Santa, Italian: Lega Santa) of 1571 was arranged by Pope Pius V and included the major Catholic powers of southern Europe (Iberian Peninsula and Italian Peninsula), specifically the Spanish Empire as well as the Italian maritime powers.It was intended to break the Ottoman Empire’s control of the eastern Mediterranean Sea and was formally concluded on 25 May 1571.

The Mozarabic Rite (Spanish: rito mozárabe, Portuguese: rito moçárabe, Catalan: ritu mossàrab), officially called the Hispanic Rite (Spanish: Rito hispánico, Portuguese: rito hispânico, Catalan: ritu hispà), and in the past also called the Visigothic Rite, is a liturgical rite of the Latin Church once used generally in the Iberian Peninsula (Hispania), in what is now Spain and Portugal. While the liturgy is often called 'Mozarabic' after the Christian communities that lived under Muslim rulers in Al-Andalus that preserved its use, the rite itself developed before and during the Visigothic period. After experiencing a period of decline during the Reconquista, when it was superseded by the Roman Rite in the Christian states of Iberia as part of a wider programme of liturgical standardization within the Catholic Church, efforts were taken in the 16th century to revive the rite and ensure its continued presence in the city of Toledo, where it is still celebrated today. It is also celebrated on a more widespread basis throughout Spain and, by special dispensation, in other countries, though only on special occasions.

In addition to its use within the Catholic Church, the rite (or elements from it) has also been adopted by Western Rite Orthodox congregations and the Spanish Reformed Episcopal Church.

John of Seville (Latin: Johannes Hispalensis or Johannes Hispaniensis) (fl. 1133-53) was one of the main translators from Arabic into Castilian in partnership with Dominicus Gundissalinus during the early days of the Toledo School of Translators. John of Seville translated a litany of Arabic astrological works in addition to being credited with the production of several original works in Latin.

The Spanish Catholic Church, or Catholic Church in Spain, is part of the Catholic Church under the spiritual leadership of the Pope in Rome, and the Spanish Episcopal Conference.

The Spanish Constitution of 1978 establishes the non-denominationality of the State, providing that the public authorities take into account the religious beliefs of society, maintaining cooperative relations with the Catholic Church and other confessions. Thus, the relations between the Spanish State and the Holy See are regulated by the 1976 agreement and the three 1979 agreements, which modified and replaced the previous 1953 concordat.

The Agricola (Latin: De vita et moribus Iulii Agricolae, lit. On the life and character of Julius Agricola) is a book by the Roman writer, Tacitus, written c. AD 98. The work recounts the life of his father-in-law Gnaeus Julius Agricola, an eminent Roman general and Governor of Britain from AD 77/78 – 83/84. It also covers the geography and ethnography of ancient Britain.

The text survived in a single codex ascertained by Poggio Bracciolini to be in a German monastery (Hersfeld Abbey). It was eventually secured by the humanist Niccolò de' Niccoli. In modern times, two manuscripts of the Agricola are preserved in the Library of the Vatican. In the late nineteenth and early twentieth centuries, two more manuscripts are said by Duane Reed Stuart to have been brought to light, with one being held by the Chapter Library of the Cathedral at Toledo in Spain and the other being found in 1902 in the private library of Count Balleani of Jesi, in Italy.

A chapter house or chapterhouse is a building or room that is part of a cathedral, monastery or collegiate church in which meetings are held. When attached to a cathedral, the cathedral chapter meets there. In monasteries, the whole community often met there daily for readings and to hear the abbot or senior monks talk. When attached to a collegiate church, the dean, prebendaries and canons of the college meet there. The rooms may also be used for other meetings of various sorts; in medieval times monarchs on tour in their territory would often take them over for their meetings and audiences. Synods, ecclesiastical courts and similar meetings often took place in chapter houses.