* The 1839 Eglinton Tournament held by the 13th Earl of Eglinton at Eglinton Castle in Ayrshire was inspired and modelled on Ivanhoe.

* 1852 – Archibald William Montgomerie, 13th Earl of Eglinton is appointed Lord Lieutenant of Ireland.

J. Thomas Looney found John de Vere, 13th Earl of Oxford is " hardly mentioned except to be praised " in Henry VI, Part Three.

Oxfordians, such as Dorothy and Charlton Ogburn, believe Shakespeare created such a role for the 13th Earl because it was the easiest way Edward de Vere could have " advertised his loyalty to the Tudor Queen " and remind her of " the historic part borne by the Earls of Oxford in defeating the usurpers and restoring the Lancastrians to power ".

* date unknown – John FitzAlan, 13th Earl of Arundel ( born 1385 )

* March 1 – Archibald William Montgomerie, 13th Earl of Eglinton is appointed Lord Lieutenant of Ireland.

** Richard de Beauchamp, 13th Earl of Warwick ( d. 1439 )

** John FitzAlan, 13th Earl of Arundel ( d. 1421 )

* January 23 – Richard de Beauchamp, 13th Earl of Warwick ( d. 1439 )

* March 10 – John de Vere, 13th Earl of Oxford, English general ( b. 1443 )

** John FitzAlan, 13th Earl of Arundel ( d. 1421 )

* April 30 – Richard de Beauchamp, 13th Earl of Warwick, English military leader ( b. 1382 )

** John de Vere, 13th Earl of Oxford, English Lancastrian leader ( d. 1513 )

While the main forces struggled in battle, John de Vere, 13th Earl of Oxford, and his Lancastrian troops routed the Yorkists under Lord William Hastings, chasing them up to Barnet.

Not much is known about the early history of John de Vere, 13th Earl of Oxford, another Lancastrian commander ; the chronicles mention little about him until the Battle of Losecoat Field.

The Yorkist king tried to secure the loyalty of the 13th Earl of Oxford by knighting him and pardoning his transgressions.

* Lady Margaret Beaufort, Countess of Devon ( c. 1409 – 1449 ), married Thomas de Courtenay, 13th Earl of Devon.

* George Herbert, 13th Earl of Pembroke, 10th Earl of Montgomery ( 1850 – 1895 )

* Sidney Herbert, 16th Earl of Pembroke, 13th Earl of Montgomery ( 1906 – 1969 )

George Robert Charles, the 13th Earl ( 1850 – 1895 ), was a grandson of the 10th Earl and a son of Baron Herbert of Lea ( q. v.

The current owner is Robert Shirley, 13th Earl Ferrers former Conservative leader in the House of Lords.

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.

Fractional distillation was developed by Tadeo Alderotti in the 13th century.

From a rural village in the early Middle Ages Delft developed to a city, that in the 13th century ( 1246 ) received its charter.

It further developed circa the 13th and 14th centuries AD with Persian influences and from existing religious and folk music.

The power to issue lettres de cachet was a royal privilege recognized by the French monarchic civil law that developed during the 13th century, as the Capetian monarchy overcame its initial distrust of Roman law.

In Italy, the carroccio or carro della guerra, the " war wagon ", was an elaboration of this practice that developed during the 13th century.

Beaumaris Castle in Wales was built in the late 13th century and is an example of concentric castle s which developed in the medieval period.

Around the middle of the 13th century, various legends developed that, after Richard's capture, his minstrel Blondel travelled Europe from castle to castle, loudly singing a song known only to the two of them ( they had composed it together ).

A number of important legal concepts and institutions were developed by Islamic jurists during the classical period of Islam, known as the Islamic Golden Age, dated from the 7th to 13th centuries.

" The complex irrigation system developed for wet-rice agriculture in this region provided the necessary economic support to sustain the development of the Thai state from the 13th century Sukhothai kingdom to contemporary Bangkok.

Personal trust law developed in England at the time of the Crusades, during the 12th and 13th centuries.

By the 13th century the following major counties had developed in Estonia: Saaremaa ( Osilia ), Läänemaa ( Rotalia or Maritima ), Harjumaa ( Harria ), Rävala ( Revalia ), Virumaa ( Vironia ), Järvamaa ( Jervia ), Sakala ( Saccala ), and Ugandi ( Ugaunia ).

It is thought that the Dominican and Franciscan orders of Christian friars developed the morality play in the 13th century by adding actors and theatrical elements to their sermons.

In the 12th and 13th centuries, Dordrecht developed into an important market city because of its strategic location.

The current centre of the town was probably developed as early as the first half of the 13th century.

Personal trust law developed in England at the time of the Crusades, during the 12th and 13th centuries.

Very little historical information about Dark Age Welsh court tradition survives, but the Middle Welsh material came to be the nucleus of the Matter of Britain and Arthurian legend as they developed from the 13th century.

In the kingdom of England, the medieval Latin word baro, baronis was used originally to denote a tenant-in-chief of the early Norman kings who held his lands by the feudal tenure of " barony " ( in Latin per baroniam ), and who was entitled to attend the Great Council which by the 13th century had developed into the Parliament of England.

Forms of sacred music which developed during the late 13th century included the motet, conductus, discant, and clausulae.

In the 13th century, the Gouwe was connected to the Oude Rijn ( Old Rhine ) by means of a canal and its mouth at the Hollandse IJssel was developed into a harbour.

In the West, hieratic Byzantine models were closely followed in the Early Middle Ages, but with the increased importance of the cult of the Virgin in the 12th and 13th centuries a wide variety of types developed to satisfy a flood of more intensely personal forms of piety.

The band's name was developed from a suggestion by drummer John Ike Walton to use the name " Elevators " and Clementine Hall added " 13th Floor ".

In 12th – 13th centuries the city's area was not less that 40 ha, it had various crafts developed and was connected by trading ways with the cities of Northern and Southern Rus '.