The Domesday Settlements of Cornwall, a study undertaken by the Cornwall Branch of the Historical Association, has identified and located settlements listed in the Exeter and Exchequer Domesday Survey of AD 1086. The following places have been identified in Davidstow ecclesiastical parish:

• Rosebenault (Roseminuet, Roseminvet), Grid Reference 178847.
• Tredwen (Riguen, Rigven), Grid Reference 177855.
• Treglasta (Treglastan, Treglaston), Grid Reference 182862.
• Tremail (Tremail), Grid Reference 163864.
• Tremblary (Trebleri), Grid Reference 156874.
• Treslay (Roslet, Roslech), Grid Reference 132886.

• Cornish entries from William I's DOMESDAY SURVEY of 1086 are available on-line.
• An index to the Historical Place Names of Cornwall has been provided on-line.
• The Francis Frith Collection - a collection of over 700,000 photographs of the UK, Europe and the Middle East taken by the Victorian photographer Francis Frith.
• Geology, Agriculture and Fishery. From the earliest of times, Cornwall has been noted for its tin but other minerals are found here, including copper, lead, pyrites, bismuth, zinc, cobalt, arsenic, wolfram and menachenite. Barley was the most successful grain, of which large crops were grown on the banks of the River Camel. Potatoes were grown extensively in some parts and cider was made in the eastern portion of the county. Fishing was an important industry, pilchards being the most numerous catch.

• Jimella's (Internet Archived page) British Counties, Parishes, etc. for Genealogists will be of particular value to overseas researchers who are unfamiliar with our geographic divisions and naming conventions.
• The ENG-DESERTED-VILLAGES Mailing List. It has been estimated that there are over 50,000 villages and hamlets that no longer exist for a variety of reasons, ie the 14th C plagues to the English Clearances in the eastern Counties, from mass migrations for economical reasons to villages just falling into the sea! The purpose of the Mailing List is to try to find out exactly where these now-deserted places were located, which parish they were in and where any extant records are kept.
• A Topographical Dictionary of England of 1831 (Google books)

• The Great Britain Historical Geography Information Service (GBHGIS) provides a mass of information about Britain's localities as they have changed over time. Information comes from census reports, historical gazetteers, travellers' tales and historic maps.
• A Vision of Britain Through Time, in the GBHGIS, provides maps and statistical information derived from census reports covering the period 1801-2001, searchable by place name or post code.
• The Association of British Counties (A.B.C.) "is a society dedicated to promoting awareness of the continuing existence of the 86 traditional Counties of Britain".
• British Counties, Parishes, etc. for Genealogists (archived copy).