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The comprehensive gazetteer of the medieval fortifications and castles of Cornwall

With thanks to Philip Davis

 

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St Michaels Mount Castle

 

In the civil parish of St Michaels Mount.
In the historic county of Cornwall (Modern Authority of Cornwall, 1974 county of Cornwall).

Benedictine Monastery established in C8. Fortifications on St Michael's Mount constructed in response to a number of sieges which have taken place, the earliest dating to 1195 when the Mount was captured by Henry de la Pomeroy. Became a secular fortress in 1337. The Mount was also captured in 1473 and in 1497. After the Reformation there was a maintainance of a garrison of five soldiers for the protection of the coastline. The fortifications were improved in 1642 by Sir Francis Basset, and the garrison increased in size. The entrance is within the thickest walls and has a portcullis. There are also the remains of a gatehouse or outer gatehouse. The military garrison room is present under the Chevy Chase room. Also present are C19 gun batteries. None of the structures predating those of the Tudor period survive.

This site has been described as a;
Fortified Ecclesiastical site, Masonry Castle, Timber Castle, Artillery Fort :

Fortified Ecclesiastical site: Monasteries, churches and granges defended against raids. Monastic communities were made up of mainly high status people, and that most abbots would be the siblings of castle owning lords; monasteries were also often used as stop over residencies for lords. Much monastic 'fortification' such as gatehouses are actually status displays rather than really defensive, although scottish raids and peasant riots did occasionally put such defences to the test. Granges could hold considerable wealth so defences here were generally practical but also reflect the status of the parent community. Churches were an important resource for the local peasant community having many functions beyond spiritual succour; in unsafe areas like the Marches, this included short-term defence against raiding bands. Bishop's castles and priest's towers are considered as private residences and are listed with other castles etc.


Masonry Castle :
These include castles designed from the outset to have masonry defences and timber castles where the fortifications or significant building have been replaced in Stone. This includes all the classic castle types such as Shell Keep, Great Tower and bailey, Enclosure, Concentric castles etc. These are the buildings which are what are generally thought of as castles and are well described in many books, web sites etc. Masonry is stonework bounded with mortar. A few castles have dry-stone walls, these are listed under earthwork castles, since the dry-stone walling basically requires a similar level of expense and skill as earthwork defences.


Timber Castle :
These are the earthwork and timber castles of the motte and bailey or ringwork form which where the vast majority of castles of the early conquest period, of the Marches in the 11th and 12th centuries and of the period during the reign of Stephen known as the Anarchy. They were generally fairly short lived, although some such castles survived for centuries, with the timber buildings and defences being replaced on occasions sometimes in timber and sometimes in Masonry (Alderton Castle in Northamptonshire was shown in a Time Team excavation to have been built about 1070 and to still have been having high status visitors in the C15-a fine piece of enamels horse harness being found in the gatehouse). Some of the smaller low mottes may have been adapted into moated manor houses, whilst others where abandoned and replaced by manor houses of a more comfortable and domestic nature. Timber castles varied greatly in size with some being massive constructions clearly deserving the term castle, whilst other were small mounds of minor knights and had a similar size, function and social status as the later pele towers. These small mottes are called 'castle' but this could be considered a rather loose use of the term.

Artillery Fort : Fortifications designed specifically for mounting artillery, usually as coastal defence against warships. Vary from large stone structures to small earthwork bulwarks with room for one or two pieces. Although some of the large royal buildings were of high quality with good detail these are actually practical military works.

The confidence that this site is a medieval fortification or palace is Certain.

Masonry ruins/remnants remains.


This site is a Grade 1 listed building protected by law*. (Images of England number 69966)

 

The Ordnance Survey Map Grid Reference is SW51472982

 

Modern Map fromOrdnance Survey logo

Good for landscape form and features

Modern Map from streetmap logo

Good for general location

Sources of information, references and further reading
  • PastScape number; 870617, 870518, 424617

  • Web site links

  • Books

    • Duffy, Michael, 1999, 'Coastal Defences and Garrisons 1480-1914' in Kain, R. and Ravenhill, W., Historical Atlas of South-West England (University of Exeter Press) p158-60
      Higham, Robert A., 1999, 'Castles, Fortified Houses and Fortified Towns in the Middle Ages' in Kain, R. and Ravenhill, W., Historical Atlas of South-West England (University of Exeter Press) p136-43
      Salter, Mike, 1999, The Castles of Devon and Cornwall (Malvern) p38-41
      Pettifer, A., 1995, English Castles, A guide by counties (Woodbridge) p22-23
      Spreadbury, I. D., 1984, Castles in Cornwall and the Isles of Scilly (Redruth)
      King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol1 p75-6
      Fry, P.S., 1980, Castles of the British Isles (David and Charles) p290
      Price, M. and H., 1980, Castles of Cornwall (Bossiney Books) p54-74
      Renn, D.F., 1973 (2edn), Norman Castles of Britain (John Baker)
      Pevsner, N. revised by Enid Radcliffe, 1970, Buildings of England: Cornwall (Harmondsworth) p175-7
      Fletcher, J.R. edited and completed by Dom John Stephan, 1952, A history of St Michael's Mount [generally religious history]
      Taylor, Thomas, 1932, History of St Michael's Mount (Cambridge) [history only]
      Oman, Charles W.C., 1926, Castles (1978 edn Beetham House: New York) p116-122
      Harvey, Alfred, 1911, Castles and Walled Towns of England (Methuen and Co)
      Mackenzie, J.D., 1897, Castles of England (Heinemann) Vol2 p13-5
      Timbs, J. and Gunn, A., 1872, Abbeys, Castles and Ancient Halls of England and Wales Vol1 (London) p497-9
      Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol3 pt2 p361
      Lysons, D. and S., 1814, Magna Britannia Vol3 Cornwall p137-42 [http://www.british-history.ac.uk/source.asp?pubid=403]
      Buck, Samuel and Nathenial, 1774, Buck’s Antiquities (London) Vol1 p29-30
      Grose, F., 1756, Antiquities of England and Wales Vol8 p29-42

  • Journal Articles

    • Pool, P.A.S. (ed), 1975, ' 'The ancient and present state of St Michael’s Mount, 1762” ' Cornish Studies 3 p29-47
      Brown, R, Allen, 1959, 'A List of Castles, 1154–1216' English Historical Review Vol74 [Reprinted in Brown, R. Allen, 1989, Castles, conquest and charters: collected papers (Woodbridge: Boydell Press) p249-280]
      Hussey, 1924, Country Life Vol56 p672-9, 714-20
      Peter, 1900, Journal of the Royal Institute of Cornwall Vol15 p221-46
      Leyland, 1897, Country Life Vol2 p42-4 [slight]
      St Aubyn, 1861, Exeter Diocesan Architectural Society Vol6 p259-69 [slight]

  • Guidebooks

    • John St Aubyn, 1978, St Michael's Mount Illustrated History and Guide (Beric Tempest)
      Wake, Joan, 1934, A Guide to St Michael's Mount with a summary of its history from legendary times

  • Antiquarian (Histories and accounts from late medieval and early modern writers)

 

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  (Gather up the fragments that are left that nothing be lost.)

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