Cornwall Council has condemned the Government's decision to cut all its funding for the Cornish language.
The Government had provided up to £150,000 a year to support the language since it was recognised under the Charter for Regional and Minority Languages in 2003.
But they have now withdrawn all money, with immediate effect.
In recent years the grant has been used to support the development of the language, including funding a range of educational activities.
The Council has now received a formal letter from the Department of Communities and Local Government stating that it was not providing any further funding to support the development of the Cornish language .
We're being asked to talk in Cornish this week as part of a campaign to raise the profile of the language.
Events for Speak Cornish Week include film screenings and children's storytimes. Last year its website received an extra 10 thousand visitors during the week.
Cornwall Council has welcomed today's pledge from Deputy Prime Minister Nick Clegg that he will ensure that the Government will continue to provide financial support for the Cornish Language Partnership.
The Government had previously said that it would not fund the Cornish Language beyond the current programme which ends on 31 March 2015.
Thousands of people throughout Cornwall will celebrate St Piran, the Patron Saint of Cornwall today.
Events are taking place across the county including a parade in Truro at 1pm starting from St George's Road.
The Penzance St Piran festival, one of the largest in Cornwall, will begin at 10am with a procession at the top of Causewayhead.
Will you be celebrating? Tweet a picture to @itvwestcountry
Cornwall Council is preparing a case to be given greater powers to raise and spend its own money.
It says that, regardless of the outcome of the Scottish referendum, the Government should give the county more freedom to manage its own affairs.
The authority is developing a stategy document outlining its plans for more local control.
The West Cornwall MP will meet the Communities minister in London this afternoon to discuss the future of the Cornish language.
Andrew George is a fluent speaker, and was the first MP to speak Cornish in the House of Commons.
He wants to help to revive the minority language.
North Cornwall MP Dan Rogerson has been putting his language skills to the test in a new video to promote the Cornish langauge. He's shown in his Westminster office giving directions to a visitor.