Morvil or Morfil is a remote upland parish on the southern slopes of the Preseli Mountains in north Pembrokeshire, Wales.

[5] In the northeast of the parish is Banc Du on which is a neolithic enclosure (the first confirmed in Wales and mid-west Britain) which would have been occupied in the fourth and third millennia BC and is contemporary with megalithic tombs such as the long barrow at Pentre Ifan.

[7] Richard Fenton recounted a local tradition that a battle or skirmish was fought there between the Normans under Martin de Turribus (founder of Newport Castle) and the Welsh, a few days after his landing at Fishguard.

[8] Samuel Lewis, in the 1833 work A Topographical Dictionary of Wales stated:This place is distinguished in the historical annals of the principality for the gallant resistance opposed by the Welsh to the encroachments of a party of Norman invaders, who in the latter part of the eleventh century, under the sanction of the reigning monarch, landed on the coast of Pembroke, with a view to establish themselves in such territories as they could obtain by conquest in this part of the principality.

[8] In the 13th century the manor of Redwalls (now Fagwyr Goch) was established to the west of Banc Du, and in 1293 Robert de Vale (Lord of Trefgarn[10]) was granted a weekly market and three-day annual fair.

The houses of the wealthy were also a target for thieves; in the same year labourer David ap Ieuan was indicted for stealing silver items worth more than £13 from the mansion of Thomas Lloyd of Kilkiffeth.

[13] Much of Morvil was unenclosed moorland until late 18th century enclosures resulted in large, regular fields, a process completed by the 1839 tithe survey.