The story
The duchy was established on 17 March 1337 by the Royal Great Charter out of the former Earldom of Cornwall by Edward III for his son, Edward, Prince of Wales, the "Black Prince", who became the first Duke of Cornwall.
The charter established that the Duke of Cornwall is to be the eldest surviving son of the monarch and the heir to the throne. Additional charters were issued later by Edward III. The duchy consisted of the title and honour, and the land holdings that supported it financially. The charter afforded the duke certain rights and responsibilities in the county, including the right to appoint the county's sheriff and to the profits from the county courts, the stannaries and the ports. The duchy estate, which was based on the holdings of the previous earls, did not comprise the whole of the county, and much of it lay outside Cornwall. The extent of the estate has varied as various holdings have been sold and others acquired over the years, both within Cornwall and in other counties.
Under the charter, the manors of the earldom passed to the duchy. The original 17 manors, all in Cornwall, are known as the antiqua maneria. Those outside Cornwall given to the duchy at its creation are known as the forinseca maneria (foreign manors), with estates incorporated later becoming known as the annexata maneria.
The first duke ordered a survey called "The Caption of Seisin of the Duchy of Cornwall" in May 1337 to determine the extent of duchy holdings of Cornish land including manors, castles and knights' fees, profits from the stannary courts and shrievalty of Cornwall, and other revenues.
A subsequent charter of Henry IV to Prince Henry stated:
We have made and created Henry our most dear first-begotten Son, Prince of Wales, Duke of Cornwall and Earl of Chester, and have given and granted, and by our Charter have confirmed to him the said Principality, Duchy, and Earldom, that he may preside there, and by presiding, may direct and defend the said parts. We have invested him with the said Principality, Duchy, and Earldom, per sertum in capite et annulum in digito aureum ac virgam auream juxta morem.
With the death of Prince Arthur in 1502, the Prince's Council became defunct. From 1547 to 1603, there was no male royal heir to hold the title of duke, and the duchy reverted to the Crown, in effect becoming a department of the Exchequer. The council was revived in 1611 to deal with a food crisis.
In the Interregnum, 1649–1660
On the execution of Charles I, the Crown lands came under the control of Parliament; this lasted until the restoration of Charles II in 1660.
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Post-Interregnum
In 1830, the Whigs argued that revenues from the two duchies of Cornwall and Lancaster should go to the public, but to secure King William IV's support for the Reform Act 1832 (2 & 3 Will. 4. c. 45) they eventually approved the civil list and left the duchies in possession of the royal family. In the 1880s the Duchy comprised 74,000 acres (30,000 hectares).
Parliament debated the two duchies' ownership multiple times, including when Queen Victoria and King Edward VII ascended the throne, respectively. In 1936, leader of the opposition Clement Attlee introduced an amendment to the civil list bill which would have seen the duchies surrendered in exchange for an adjusted annual sum of money tied to the actual cost of royal functions, but the amendment was defeated. In 1971, a private member's bill to nationalise the duchy was defeated, but more than 100 MPs supported it.
Upon Queen Elizabeth II's accession to the throne, the then Prince Charles began receiving £209,000 from the duchy, with duchy authorities stating that it was spent towards his "maintenance and education". In 1969, the government acknowledged that his duchy income was "considerably in excess of his current expenses".
In 1975, Prince Charles established the Duke of Cornwall's Benevolent Fund to benefit south west communities, with revenue coming from the net proceeds from Cornwall bona vacantia. In August 1980 the Highgrove estate was purchased by the Duchy of Cornwall for a figure believed to be between £800,000 and £1,000,000 with funds raised for its purchase by the sale of three properties from the duchy's holdings, including part of the village of Daglingworth in Gloucestershire.
In 1988, West Dorset District Council allocated land in the ducal estate, west of Dorchester, for housing development, which became known as Poundbury. The Duchy Originals company was set up in 1992 to use produce from farms on the ducal estate, with some proceeds going to his charities. Duchy Originals was licensed out to Waitrose in 2009 after losses in 2008. In 2006, Llwynywermod was purchased by the Duchy as a residence for the Duke in Wales.
In 1995, the duchy granted a 99-year lease of the uninhabited islets of the Isles of Scilly, plus the untenanted land on the five inhabited islands, to the Isles of Scilly Wildlife Trust for an annual payment of a single daffodil. On 7 February 2005, the Duchy of Cornwall's finances came under public scrutiny by the House of Commons Public Accounts Committee.
Under the Land Registration Act 2002, the Duchy was required by October 2013 to have filed with the Land Registry mineral rights given to the Duchy in 1337. Some land owners of Talskiddy were surprised that these rights would be expressly inserted into their registers of title upon being informed of the filing in February 2012.
In January 2012, the Duchy purchased a warehouse at Milton Keynes from Waitrose. The Duchy was involved in the Truro Eastern District Centre (TEDC) project. The TEDC project would see a park and ride, a recycling centre, 110 homes and a Waitrose at the junction of Union Hill and Newquay Road. The project received Cornwall Council approval in March 2012, but the Truro Council challenged it in court. This brought questions over the relationship between the Duchy and Waitrose.
In 2013, permission was given for the building of Nansledan, an urban extension to Newquay in Cornwall, which the Duchy had been planning since the early 2000s. Construction began a few months later.
In 2013, the Duchy's office in Cornwall moved from Liskeard to Restormel Manor's old farm buildings. In 2014, the Duchy purchased the southern half of the Port Eliot estate from Lord St Germans. By 2015, Prince William, then Duke of Cambridge, had started attending the twice-yearly Duchy Council. In 2017, the Paradise Papers revealed that the Duchy held investments in offshore funds and companies. The palace later stated that offshore investments had been exited by 2019.
From Wikipedia’s article on Duchy of Cornwall, shared under CC BY-SA 4.0.5