In 1202 Madoc ap Gruffydd Maelor, Lord of Dinas Brân, granted some of his demesne lands in ‘Wrechcessham’ to his newly founded Cistercian abbey of Valle Crucis and in 1220 the earliest reference to a church in Wrexham is made.
Wrexham increased in importance throughout the Middle Ages as the lordship's administrative centre, and the town's position made it a suitable centre for the exchange of the produce of the Dee valley and Denbighshire uplands, whilst iron and lead were also mined locally. 1493) wrote of Sion ap Madog, the great-nephew of Owain Glyndŵr, as Alecsander i Wrecsam (an Alexander for Wrexham).
The origins of the name "Wrexham" may possibly be traced back to this period.
Renewed Welsh and Viking attacks led to a reduction in Anglo-Saxon power in north Wales from the early 10th century.
The traditional pattern of Welsh life remained undisturbed, and until the close of the Middle Ages the pattern was for English incomers to be rapidly assimilated into Wrexham's Welsh society, for instance adopting Welsh patronymics. In the mid 15th century, the parish church was gutted by fire.
The main part of the current church was built in the late 15th and early 16th centuries.
The museum also holds the archive of the Royal Welch Fusiliers; battalions were stationed in Wrexham during the First World War.
Wrexham County Borough Council is made up of 52 Councillors, with one then appointed to serve as Mayor for a year.
The Wrexham constituency elects members to the UK Parliament and the National Assembly for Wales.
The constituency includes both the town and some of its outlying villages such as Gwersyllt, Llay, Marford, Rossett and Holt.
The UK Parliament constituency of Wrexham is considered a safe seat for the Labour Party.