Marston is a village in the civil parish of Old Marston about 2 miles (3 km) northeast of the centre of Oxford, England. It was absorbed within the city boundaries in 1991. It is commonly called Old Marston to distinguish it from the suburb of New Marston that developed between St. Clement's and the village in the 19th and 20th centuries. The A40 Northern Bypass, part of the Oxford Ring Road forms a long north-west boundary of the village and parish and a limb, namely a distributary, of the Cherwell forms the western boundary.

Oxford is a city and non-metropolitan district in Oxfordshire, England, of which it is the county town. Founded in the 8th century, it was granted city status in 1542. The city is located at the confluence of the rivers Thames and Cherwell. It had a population of 162,100 at the 2021 census. It is 56 miles (90 km) north-west of London, 64 miles (103 km) south-east of Birmingham and 61 miles (98 km) north-east of Bristol. The city is home to the University of Oxford, the oldest university in the English-speaking world; it has buildings in every style of English architecture since late Anglo-Saxon. Oxford's industries include motor manufacturing, education, publishing, information technology and science.