I have to admit, I’d never heard Cornish before I came across this video on the website of the Network to Promote Linguistic Diversity. The NPLD  is a pan-European network which encompasses constitutional, regional and smaller-state languages to promote linguistic diversity in the context of a multilingual Europe. According to their site, some 50 million EU citizens, 10% of the EU population, speak a regional or minority language. Cornish is just one of these languages: