Imbolc
Imbolc is strongly associated with Saint Brigid (Old Irish: Brigit, modern Irish: Bríd, modern Scottish Gaelic: Brìghde or Brìd, anglicised Bridget). Saint Brigid is thought to have been based on Brigid, a Gaelic goddess. The festival, which celebrates the onset of spring, is thought to be linked with Brigid in her role as a fertility goddess.
On Imbolc Eve, Brigid was said to visit virtuous households and bless the inhabitants. As Brigid represented the light half of the year, and the power that will bring people from the dark season of winter into spring, her presence was very important at this time of year.
Families would have a special meal or supper on Imbolc Eve. This typically included food such as colcannon, sowans, dumplings, barmbrack and/or bannocks. Often, some of the food and drink would be set aside for Brigid.
Brigid would be symbolically invited into the house and a bed would often be made for her. In the north of Ireland a family member, representing Brigid, would circle the home three times carrying rushes. They would then knock the door three times, asking to be let in. On the third attempt they are welcomed in, the meal is had, and the rushes are then made into a bed or crosses. In 18th century Mann, the custom was to stand at the door with a bundle of rushes and say "Brede, Brede, come to my house tonight. Open the door for Brede and let Brede come in". The rushes were then strewn on the floor as a carpet or bed for Brigid. In the 19th century, some old Manx women would make a bed for Brigid in the barn with food, ale, and a candle on a table. In the Hebrides in the late 18th century, a bed of hay would be made for Brigid and someone would then call out three times: "a Bhríd, a Bhríd, thig a stigh as gabh do leabaidh" ("Bríd Bríd, come in; thy bed is ready"). A white wand, usually made of birch, would be set by the bed. It represented the wand that Brigid was said to use to make the vegetation start growing again. In the 19th century, women in the Hebrides would dance while holding a large cloth and calling out "Bridean, Bridean, thig an nall 's dean do leabaidh" ("Bríd Bríd, come over and make your bed"). However, by this time the bed itself was rarely made.
Before going to bed, people would leave items of clothing or strips of cloth outside for Brigid to bless.Ashes from the fire would be raked smooth and, in the morning, they would look for some kind of mark on the ashes as a sign that Brigid had visited. The clothes or strips of cloth would be brought inside, and believed to now have powers of healing and protection.
A Brigid's cross In Ireland and Scotland, a representation of Brigid would be paraded around the community by girls and young women. Sometimes the representative was a girl, but usually it was a doll-like figure known as a Brídeóg (also called a 'Breedhoge' or 'Biddy'). It would be made from rushes or reeds and clad in bits of cloth, shells and/or flowers. In the Hebrides of Scotland, a bright shell or crystal called the reul-iuil Bríde (guiding star of Brigid) was set on its chest. The girls would carry it in procession while singing a hymn to Brigid. All wore white with their hair unbound as a symbol of purity and youth. They visited every house in the area, where they received either food or more decoration for the Brídeóg. Afterwards, they feasted in a house with the Brídeóg set in a place of honour, and put it to bed with lullabies. When the meal was done, the local young men humbly asked for admission, made obeisance to the Brídeóg, and joined the girls in dancing and merrymaking. In many parts, only unwed girls could carry the Brídeóg, but in some places both boys and girls carried it. In the late 17th century, Catholic families in the Hebrides would make a bed for the Brídeóg out of a basket. Up until the mid-20th century, children in Ireland still went house-to-house asking for pennies for "poor Biddy", or money for the poor. In County Kerry, men in white robes went from house to house singing.
In Ireland, Brigid's crosses (pictured on the right) were made at Imbolc. A Brigid's cross usually consists of rushes woven into a square or equilateral cross, although three-armed crosses have also been recorded. They were often hung over doors, windows and stables to welcome Brigid and protect the buildings from fire and lightning. The crosses were generally left there until the next Imbolc. In western Connacht, people would make a Crios Bríde (Bríd's girdle); a great ring of rushes with a cross woven in the middle. Young boys would carry it around the village, inviting people to step through it and so be blessed.
Today, some people still make Brigid's crosses and Brídeógs or visit holy wells dedicated to St Brigid on the 1st of February. For more on the customs, see Sile Healy's excellent article from 2005: http://www.kilmurry.ie/newsletter2011/stbridgits_day.htm
Source: Wikipedia https://en.wikipedia.org/wiki/Imbolc