It is not entirely clear why the Ancestral Puebloans migrated from their established homes in the 12th and 13th centuries.

This legend of Trebeta as having founded Trier is also found in Godfrey of Viterbo's Pantheon ( 1185 ) and several other German chronicles of the 12th or 13th century, including the works of Sigebert of Gembloux.

Owing to its geographical location the town was frequently embroiled in the border warfare and power play of the 12th and 13th centuries in the Welsh Marches.

It has been traced certainly to the 13th century, and conjecturally to the 12th.

It was constructed in the 12th and 13th centuries.

The doctrine of precedent developed during the 12th and 13th centuries, as the collective judicial decisions that were based in tradition, custom and precedent.

By the time of the rediscovery of the Roman law in Europe in the 12th and 13th centuries, the common law had already developed far enough to prevent a Roman law reception as it occurred on the continent.

The Franciscan piety of the 12th and 13th centuries led to " popular Christology ".

Catharism (; from, katharos, pure ) was a name given to a Christian religious movement with dualistic and gnostic elements that appeared in the Languedoc region of France and other parts of Europe in the 11th century and flourished in the 12th and 13th centuries.

There is a difference of opinion as to whether it is the 13th Station of the Cross, which others identify as the lowering of Jesus from the cross and locate between the 11th and 12th station up on Calvary.

By the 12th to 13th centuries A. D., monks were preparing illuminated manuscripts on vellum and parchment in monasteries throughout Europe and were using lead styli to draw lines for their writings and for the outlines for their illuminations.

The 10th edition was only a supplement to the 9th, just as the 12th and 13th editions were supplements to the 11th.

Among those from whom he procured portrait commissions were Pedro Téllez-Girón, 9th Duke of Osuna and his wife María Josefa Pimentel, 12th Countess-Duchess of Benavente, María del Pilar de Silva, 13th Duchess of Alba ( universally known simply as the " Duchess of Alba "), and her husband José María Álvarez de Toledo, 15th Duke of Medina Sidonia, and María Ana de Pontejos y Sandoval, Marchioness of Pontejos.

These usually appear on the odd numbered frets, but also on the 12th fret ( the one octave mark ) instead of the 11th and 13th frets.

The Sosso kingdom ( 12th to 13th centuries ) briefly flourished in the void but the Islamic Mandinka Mali Empire came to prominence when Soundiata Kéïta defeated the Sosso ruler, Soumangourou Kanté at the semi-historical Battle of Kirina in c. 1235.

One such Arabic grimoire devoted to astral magic, the 12th century Ghâyat al-Hakîm fi ' l-sihr, was later translated into Latin and circulated in Europe during the 13th century under the name of the Picatrix.

For example, West 4th Street, which runs east-west outside of the Village, turns and runs north, causing it to intersect with West 10th, 11th, 12th, and ending at West 13th Street.

At the same time, Catalan and Galician became the standard languages in their respective territories, developing important literary traditions and being the normal languages in which public and private documents were issued: Galician from the 13th to the 16th century in Galicia and nearby regions of Asturias and Leon, and Catalan from the 12th to the 18th century in Catalonia, the Balearic Islands and Valencia, where it was known as Valencian.

After Bolesław III divided the country among his sons, internal fragmentation eroded the initial Piast monarchy structure in the 12th and 13th centuries.

The House of Habsburg gathered dynastic momentum through the 11th, 12th and 13th centuries.

In the 12th and 13th centuries, Turks and Afghans invaded parts of northern India and established the Delhi Sultanate in the former Rajput holdings.

Chretien's story attracted many continuators, translators and interpreters in the later 12th and early 13th centuries, including Wolfram von Eschenbach, who makes the grail a great precious stone that fell from the sky.

* Verses by Rigaut de Barbezieux, a late 12th or early 13th century Provençal troubador, where mention is made of Perceval, the lance, and the Grail (" Like Perceval when he lived, who stood amazed in contemplation, so that he was quite unable to ask what purpose the lance and grail served "-" Attressi con Persavaus el temps que vivia, que s ' esbait d ' esgarder tant qu ' anc non saup demandar de que servia la lansa ni-l grazaus ").

Ownership has been attributed to various groups ( including the Knights Templar, probably because they were at the peak of their influence around the time that Grail stories started circulating in the 12th and 13th centuries ).

Old Norse-speaking population settled parts of Finland's coastal areas in the 12th to 13th centuries.

There was keen competition between the two from the introduction of the The Compendious Book on Calculation by Completion and Balancing | Algebra into Europe in the 12th century until its triumph in the 16th.

During the 20th century BC the Indo-European Hittites entered the region and gradually established a great empire which was destroyed by invaders in the 12th century.

The current consensus, based on terminology defined by the Pecos Classification, suggests their emergence around the 12th century BCE, during the archaeologically designated Early Basketmaker II Era.

A novel called Hayy ibn Yaqdhan, based on Avicenna's story, was later written by Ibn Tufail ( Abubacer ) in the 12th century and translated into Latin and English as Philosophus Autodidactus in the 17th and 18th centuries respectively.

These exceptions, introduced with a good object, had grown into a widespread evil by the 12th century, virtually creating an imperium in imperio, and depriving the bishop of all authority over the chief centres of influence in his diocese.

In the 12th century the abbots of Fulda claimed precedence of the archbishop of Cologne.

Although controversial at its time, the 13 principles laid out by the 12th century Spanish Jewish philosopher Maimonides are now considered mostly normative.

Gothic-This style prevailed between the 12th century and the 16th century in Europe.

The modern history of Abensberg, which is often incorrectly compared with that of the 3rd century Roman castra ( military outpost ) of Abusina, begins with Gebhard, who was the first to mention Abensberg as a town, in the middle of the 12th century.

Rebuilt by the emperor Justin I after an earthquake in the 6th century, it became Justinopolis ( 525 ); but the old native name persisted, and when Thoros I, king of Lesser Armenia, made it his capital early in the 12th century, it was known as Anazarva.

They are said to go back at least to the Greek poet Lycophron, in the third century BCE ; but this relies on an account of Lycophron given by John Tzetzes in the 12th century.

In the 12th century eddic prose Gylfaginning Snorri Sturluson relates it as the first of a series of abodes in heaven:

As a theologian Alain de Lille shared in the mystic reaction of the second half of the 12th century against the scholastic philosophy.

Brought back from Sippar to Susa as war prize in the 12th century BC

A popular legend, originating from 12th century chronicles, tells how when he first fled to the Somerset Levels, Alfred was given shelter by a peasant woman who, unaware of his identity, left him to watch some cakes she had left cooking on the fire.

Alger of Liège ( 1055 – 1131 ), known also as Alger of Cluny and Algerus Magister, was a learned clergyman from Liège who lived in the first half of the 12th century.

He was born in the latter part of the 12th century at Bennes, a village between Ollé and Chauffours in the diocese of Chartres.

In 1122 Afonso became fourteen, the adult age in the 12th century.

Dr. Alastair Northedge, a British archaeologist who wrote a book about findings in ' Anah, wrote that the minaret is ' commonly attributed to the Uqaylid ( dynasty ) and the 5th / 11th century ( AH / AD ), though ... more probably of the 6th / 12th century.