Costumed trick-or-treating takes its inspiration from the Celtic holiday Samhain—“summer’s end” in Irish—more than 2,000 years ago. Samhain marked New Year’s Day and fell around ...

Present day placenames indicate the extent of their influence: the town of Bala in Turkey and the city of London in England both have names with Celtic origins, as do the rivers Danube ...

There has been much debate about the origins of the 'Celtic' churches. Was it a development from the Christianity planted in Britain under the Roman Empire, or did its origins lie elsewhere?