Oxford was first occupied in Saxon times, and was initially known as "Oxenaforda", meaning "Ford of the Ox"; fords being very important before the days of bridges.^[1] It began with the foundation of St Frideswide's nunnery in the 8th century, and was first mentioned in written records in the Anglo-Saxon Chronicle for the year 912. In the 10th century Oxford became an important military frontier town between the kingdoms of Mercia and Wessex and was on several occasions raided by Danes. St Frideswide is the patron saint of both the city and university.

In 1191, a city charter stated in Latin,^[2]

“Be it known to all those present and future that we, the citizens of Oxford of the Commune of the City and of the Merchant Guild have given, and by this, our present charter, confirm the donation of the island of Midney with all those things pertaining to it, to the Church of St. Mary at Oseney and to the canons serving God in that place.

“Since, every year, at Michaelmas the said canons render half a mark of silver for their tenure at the time when we have ordered it as witnesses the legal deed of our ancestors which they made concerning the gift of this same island; and besides, because we have undertaken on our own part and on behalf of our heirs to guarantee the aforesaid island to the same canons wheresoever and against all men; they themselves, by this guarantee, will pay to us and our heirs each year at Easter another half mark which we have demanded; and we and our heirs faithfully will guarantee the aforesaid tenement to them for the service of the aforesaid mark annually for all matters and all services.

“We have made this concession and confirmation in the Common council of the City and we have confirmed it with our common seal. These are those who have made this concession and confirmation.”

(There follows a list of witnesses, ending with the phrase, “… and all the Commune of the City of Oxford.”)

The prestige of Oxford is seen in the fact that it received a charter from King Henry II, granting its citizens the same privileges and exemptions as those enjoyed by the capital of the kingdom; and various important religious houses were founded in or near the city. A grandson of King John established Rewley Abbey for the Cistercian Order; and friars of various orders (Dominicans, Franciscans, Carmelites, Augustinians, and Trinitarians), all had houses at Oxford of varying importance. Parliaments were often held in the city during the thirteenth century. The Provisions of Oxford were installed by a group of barons led by Simon de Montfort; these documents are often regarded as England's first written constitution.

The University of Oxford is first mentioned in 12th century records. Oxford's earliest colleges were University College (1249), Balliol (1263) and Merton (1264). These colleges were established at a time when Europeans were starting to translate the writings of Greek philosophers. These writings challenged European ideology – inspiring scientific discoveries and advancements in the arts – as society began seeing itself in a new way. These colleges at Oxford were supported by the Church in hopes to reconcile Greek Philosophy and Christian Theology. The relationship between "town and gown" has often been uneasy — as many as 93 students and townspeople were killed in the St Scholastica Day Riot of 1355.

The sweating sickness epidemic in 1517 was particularly devastating to Oxford and Cambridge where it killed half of both cities' populations, including many students and dons.^[3]

Christ Church Cathedral, Oxford is unique as a college chapel and cathedral in one foundation. Originally the Priory Church of St Frideswide, the building was extended and incorporated into the structure of the Cardinal's College shortly before its refounding as Christ Church in 1546, since which time it has functioned as the cathedral of the Diocese of Oxford.

The Oxford Martyrs were tried for heresy in 1555 and subsequently burnt at the stake, on what is now Broad Street, for their religious beliefs and teachings. The three martyrs were the bishops Hugh Latimer and Nicholas Ridley, and the Archbishop Thomas Cranmer. The Martyrs' Memorial stands nearby, round the corner to the North on St. Giles.

During the English Civil War, Oxford housed the court of Charles I in 1642, after the king was expelled from London, although there was strong support in the town for the Parliamentarian cause. The town yielded to Parliamentarian forces under General Fairfax in the Siege of Oxford of 1646. It later housed the court of Charles II during the Great Plague of London in 1665–66. Although reluctant to do so, he was forced to evacuate when the plague got too close.

In 1790, the Oxford Canal connected the city with Coventry. The Duke's Cut was completed by the Duke of Marlborough in 1789 to link the new canal with the River Thames; and in 1796 the Oxford Canal company built their own link to the Thames, at Isis Lock. In the 1840s, the Great Western Railway and London and North Western Railway linked Oxford with London.

In the 19th century, the controversy surrounding the Oxford Movement in the Anglican Church drew attention to the city as a focus of theological thought.

Oxford's Town Hall was built by Henry T. Hare, the foundation stone was laid on 6 July 1893 and opened by the future King Edward VII on 12 May 1897. The site has been the seat of local government since the Guild Hall of 1292 and though Oxford is a city and a Lord Mayoralty, it is still called by its traditional name of "Town Hall".

By the early 20th century, Oxford was experiencing rapid industrial and population growth, with the printing and publishing industries becoming well established by the 1920s. Also during that decade, the economy and society of Oxford underwent a huge transformation as William Morris established the Morris Motor Company to mass produce cars in Cowley, on the south-eastern edge of the city. By the early 1970s over 20,000 people worked in Cowley at the huge Morris Motors and Pressed Steel Fisher plants. By this time Oxford was a city of two halves: the university city to the west of Magdalen Bridge and the car town to the east. This led to the witticism that "Oxford is the left bank of Cowley". Cowley suffered major job losses in the 1980s and 1990s during the decline of British Leyland, but is now producing the successful New MINI for BMW on a smaller site. A large area of the original car manufacturing facility at Cowley was demolished in the 1990s and is now the site of the Oxford Business Park.^[4]

The influx of migrant labour to the car plants and hospitals, recent immigration from south-east Asia, and a large student population, have given Oxford a notable cosmopolitan character, especially in the Headington and Cowley Road areas with their many bars, cafes, restaurants, clubs, ethnic shops and fast food outlets. Oxford is one of the most diverse small cities in Britain with the most recent population estimates for 2005.^[5] showing that 27% of the population were from an ethnic minority group, including 16.2% from a non-white ethnic minority ethnic group (ONS). These figures do not take into account more recent international migration into the city, with over 10,000 people from overseas registering for National Insurance Numbers in Oxford between 2005/06 and 2006/07.^[6]

On 6 May 1954, Roger Bannister, as a 25 year old medical student, ran the first authenticated four-minute mile at the Iffley Road running track in Oxford. Although he had previously studied at Oxford University, Bannister was actually studying at St Mary's Hospital Medical School in London at the time.

Oxford's second university, Oxford Brookes University, formerly the Oxford School of Art, then Oxford Polytechnic, based on Headington Hill, was given its charter in 1991 and has been voted for the last five years the best new university in the UK.

Geography