There's actually no such language as "Celtic". Celtic refers to a group of dozens of languages, six of which are spoken today:
Halloween started in Irland as a pagan holiday ,so it is celtic.
Boudicca was a Celtic queen and warrior queen of the Iceni tribe in ancient Britain. She likely practiced Celtic pagan beliefs, which involved reverence for nature, rituals, and deities associated with the natural world.
What I think the religion of the Celtic cross came from is probably the Pagan Druidic religion.
Halloween is a combination of pagan holidays, Sambain and Pomono.
It was the last night of the year in the old Celtic calender, a night for witches, known a Old Year's Night and was a Pagan holiday
GRAET ??
Yes, Wicca does exist. Wicca is a pagan revivalist religion that incorporates many ancient Celtic traditions with other pagan pantheons.
Brigid never "took over" any pagan cult. She was originally worshipped as goddess in the Celtic nation.
The Celtic word for strong is "tairngreacht."
pagan or irreligious
The Celtic word for girl is "cailín" in Irish Gaelic.
pagan