The Book of Kells is often considered the greatest example of the fusion of Christianity and Celtic art. Created around the 8th or 9th century, it contains intricate illustrations and ornamentation that blend Christian themes with traditional Celtic designs.

Celtic have a larger support.

The tenant of Celtic Park is Celtic F.C. in Scotland.

Helena Paterson has written:

'The Celtic Moon Sign Kit'

'Das keltische Mondrad'

'Handbook Of Celtic Astrology' -- subject(s): Astrology, Celtic, Celtic Astrology, Celtic Mythology, Miscellanea, Mythology, Celtic

There is no such language as Celtic.