According to tradition, the parish church was founded in the 7th century, and was originally dedicated to St. Leonard.
 The existing building has been described as "one of the most ambitious churches in Monmouthshire".
 The earliest parts of the building date from the 13th century, at about the same time as it was handed by Gilbert Marshal, Earl of Pembroke to the Abbey of Anagni in Italy.
It was later administered by Tintern Abbey.
 The church was greatly extended in the 15th century, and was restored and re-dedicated to St. Mary in the mid-19th century.

Remains of The Procurator's House, some parts of which may date from the 14th century and others from the 16th century, are still standing just off the village square.
The procurator was responsible for collecting the tithes of the village on behalf of the abbey.

The church is the burial place of Welsh composer Mansel Thomas.
According to tradition, the parish church was founded in the 7th century, and was originally dedicated to St. Leonard.  The existing building has been described as "one of the most ambitious churches in Monmouthshire".  The earliest parts of the building date from the 13th century, at about the same time as it was handed by Gilbert Marshal, Earl of Pembroke to the Abbey of Anagni in Italy. It was later administered by Tintern Abbey.  The church was greatly extended in the 15th century, and was restored and re-dedicated to St. Mary in the mid-19th century.
Remains of The Procurator's House, some parts of which may date from the 14th century and others from the 16th century, are still standing just off the village square. The procurator was responsible for collecting the tithes of the village on behalf of the abbey.
The church is the burial place of Welsh composer Mansel Thomas.
Magor, Monmouthshire