THE CORNISH Stannary Parliament has claimed that anyone of Cornish descent is free to enjoy a national holiday on St Piran's Day.
It has published a statement citing the European Convention of Human Rights as a basis for having a day off on March 5.
However, Cornwall Council said it would not acknowledge the claim and staff would have to use annual leave to take the day off.
The parliament's proclamation said: "From this day forward, all and any people of direct Cornish descent are entitled to celebrate St Piran's Day on March 5 as being the national holiday of the Cornish Nation without let or hindrance from any other authority whatsoever."
It said it passed the agreement into law on February 6 "under the authority of the Seal of the Comunitatis Stangnatorum Cornubia and signed by the appointed Keeper for and on behalf of the Stannators of the Cornish Stannary Parliament".
It added that the right to the day off was confirmed "under Act 5 of The Constitution of Cornwall which incorporates the European Convention of Human Rights" – specifically, the latter's Article 10 guarantee to freedom of expression.
The Cornish Guardian asked Cornwall Council whether it would recognise the new "law".
A spokeswoman said: "As St Piran's Day is not officially recognised as a public holiday, any request for leave will be considered in the same way as other requests at any other time of the year, to take into account operational requirements."
Last year, the council agreed to write to the Government to request that, if proposals went through to replace the May Day public holiday with a new one, in Cornwall it should be on St Piran's Day.
No decision has been taken yet by the Government.