The Maelor was first divided from the rest of Wales by the construction of Offa's Dyke in the eighth century, but was reclaimed by Wales during the reign of Stephen of England.
In 1397, under Richard II of England, the English Maelor was merged with the County Palatine of Chester to form the Principality of Chester.
In 1974, both halves of the Maelor became part of the Wrexham Maelor district, which in 1996 became part of the county borough of Wrexham.
The eastern part of MaelorSaesneg appears to have formed part of a similarly extensive ecclesiastical district centred on the early church dedicated to St Oswald at Malpas, Cheshire, whose medieval parish included the township of Iscoyd to the north-east and whose deanery towards the end of the 13th century included the parish of Hanmer.
The only priest in MaelorSaesneg mentioned in the Domesday survey, however, is one with an endowment of land in the manor of Bettisfield (Bedesfeld), one of the townships of the ancient parish of Hanmer and probably signifying the existence of St Chad's church at Hanmer itself by that date.
By the Conquest period MaelorSaesneg lay within the diocese of Lichfield, a position it occupied apart from a the period between 1075-95 when it belonged to the short-lived diocese of Chester, until 1541 when it was transferred to the new diocese of Chester.