Proto-Celtic language in the context of "Celts"

The Celtic languages (/ˈkɛltɪk/ KEL-tik) are a branch of the Indo-European language family, descended from the hypothetical Proto-Celtic language. The term "Celtic" was first used to describe this language group by Edward Lhuyd in 1707, following Paul-Yves Pezron, who made the explicit link between the Celts described by classical writers and the Welsh and Breton languages.

During the first millennium BC, Celtic languages were spoken across much of Europe and central Anatolia. Today, they are restricted to the northwestern fringe of Europe and a few diaspora communities. There are six living languages: the four continuously living languages Breton, Irish, Scottish Gaelic and Welsh, and the two revived languages Cornish and Manx. All are minority languages in their respective countries, though there are continuing efforts at revitalisation. Welsh is an official language in Wales and Irish is an official language across the island of Ireland and of the European Union. Welsh is the only Celtic language not classified as endangered by UNESCO. The Cornish and Manx languages became extinct in modern times but have been revived. Each now has several hundred second-language speakers.

Common Brittonic (Welsh: Brythoneg; Cornish: Brythonek; Breton: Predeneg), also known as British, or Proto-Brittonic, is the reconstructed Celtic language thought to be historically spoken by the Celtic Britons in Britain and Brittany. It is the common ancestor of the later Brittonic languages.

It is a form of Insular Celtic, descended from Proto-Celtic, a theorized parent language that, by the first half of the first millennium BC, was diverging into separate dialects or languages. Evidence from early and modern Welsh shows that Common Brittonic was influenced by Latin during the Roman period, especially in terms related to the church and Christianity. By the sixth century AD, the languages of the Celtic Britons were swiftly diverging into Neo-Brittonic: Welsh, Cumbric, Cornish, Breton. Pictish may either have been a sister language or a descendant branch.

In modern English, the nouns vates (/ˈveɪtiːz/) and ovate (UK: /ˈɒvət, ˈoʊveɪt/, US: /ˈoʊveɪt/), are used as technical terms for ancient Celtic bards, prophets and philosophers. The terms correspond to a Proto-Celtic word which can be reconstructed as *wātis. They are sometimes also used as English equivalents to later Celtic terms such as Irish fáith "prophet, seer".

Setúbal (/səˈtuːbəl/ sə-TOO-bəl, US also /-bɑːl/ -⁠bahl, European Portuguese: [sɨˈtuβal] ; Proto-Celtic: *Caetobrix), officially the City of Setúbal (Portuguese: Cidade de Setúbal), is a city and a municipality in Portugal. The population of the entire municipality in 2014 was 118,166, occupying an area of 230.33 km (88.9 sq mi). The city itself had 89,303 inhabitants in 2001. It lies within the Lisbon metropolitan area, about 50 kilometres (31 miles) from Lisbon downtown by road.

In the times of Al-Andalus, the city was known as Shaṭūbar (Andalusian Arabic: شَطُوبَر [ʃeˈtˤuːbɑr]), after the old pre-Roman name of Caetobriga. In the 17th century, the port was called Saint Ubes in English, and Saint-Yves in French.