Five successive groups were said to have invaded Ireland, in waves, and Brighid was a member of the fifth, the Tuatha De Danann, the People of the Goddess Danu. They were the immediate predecessors to the Sons of Mil, the next group of invaders who became the ancestors of the modern Irish. The Tuatha were said to have been a people of magick wonders, learned in all the arts and masters of wizardry.

Although all the other invaders reached Ireland by ship, the Tuatha were said to have reached Ireland in dark clouds through the air, to have alighted on the mountain of Conmaicne Rein, and for three subsequent days to have cast a magickal darkness over the face of the sun.

Brighid was the daughter of The Dagda, the "Good God", now revered as the patron God of the Druids, and was said to have been a poetess; her two sisters, also of the same name, were said to have been women of healing and smith-work.

Her worship, through the ages, has thus focused on her as a triple Goddess of Fire: the fire of poetic inspiration and divination, the fire of healing and fertility, and the fire of metal-working and crafts.

During the Second Battle of Mag Tuired, fought between the Tuatha and the Fomoire, a people on Ireland when the Tuatha arrived, Brighid's son, Ruadan, was sent to fight, and was killed in battle. Brighid came to bewail her son, and is therefore said to have been the first to engage in caoine (keening) for the death of a loved one, and thus also became the comforter of all mourners.

The ancient Irish worship of Brighid was so powerful and so enduring that it was transferred, under Christianity, to St. Brigit, said to have been ban-drui, or a druidess, before her conversion, and who was reported to have been born in 455 A.D. in County Down, to a druid father, known as Dubhtach, who raised her in the ancient ways.

Her religious community at Kildare, a name based on druidic symbolism, being cill-dara, the Church of the Oak, is still maintained.

In addition, St. Brigit's feastday was grafted onto the ancient pagan festival of Imbolc, held from the eve of January 31st through the day of February 1st, sacred to the Goddess Brighid.

In Celtic Christian lore, she was further said to have been the midwife and foster-mother of Yeshua, also known as Jesus Christ, and to have been a helper and friend of his mother, Miriam, also known as Mary.

Her worship has therefore continued uninterrupted in Ireland and throughout the Celtic lands, down through the ages to the present time.