Mundon is a village and civil parish on the Dengie peninsula in Maldon District in the county of Essex, England. It lies 3 miles south-east of Maldon. The manor of Munduna passed from the king’s thegn Godwin to Eudo Dapifer at the Conquest.

Until the Dissolution of the Monasteries it formed part of the estates of St Johns Abbey, Colchester; it passed to Thomas Cromwell before being returned to the Duchy of Lancaster, which held the right of presentation to the vicarage until the 20th century.

The 14th-century timber-framed Church of St. Mary, built within the remains of the moat of Mundon Hall, and likely on Saxon and Norman foundations, has been disused since the 1970s, but is currently in the care of Friends of Friendless Churches, supported by English Heritage. Following a long period of remedial work, the church once again re-opened to visitors in August 2009. The entire church was underpinned, and much structural work was carried out by Bakers of Danbury. The church was re-glazed, and now, internally, appears lighter than it has in recent years. It is a grade I listed building.

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