Lughnasadh

Worth knowing: Lughnasadh is the Gaelic festival of the harvest’s beginning, held at the start of August and counted among the four quarter-days of the Irish year. Medieval myth founds it on the god Lugh, who held funeral games for his foster-mother Tailtiu after she died clearing the plains for farming; the name means the assembly of Lugh, not his birthday. Its most vivid living survival is Reek Sunday, the pilgrimage up Croagh Patrick in Co. Mayo, where a pre-Christian hill-gathering and a Christian pilgrimage fused at one summit. Bilberry-picking is the most unbroken thread from the medieval festival to modern practice.

What is Lughnasadh and when is it held

Lughnasadh is the Gaelic festival that opens the harvest, kept at the Calends of August, the first of the month. It is one of the four great division-points of the Irish year, standing with Samhain at the start of winter, Imbolc at the start of spring, and Bealtaine at the start of summer. The Wooing of Emer, translated by Kuno Meyer, gives one of the earliest listings of these quarter-days and places Lughnasadh among them, fixing it in the calendar of early Ireland.

The festival belonged at once to the field and to the assembly. It marked the moment when the first new crops could be taken, and it gathered communities to heights and to water-sites to mark that turn together. In the Irish-speaking world the modern form of the name, Lúnasa, became the name of the month of August itself, so the festival is written into the calendar to this day.

The meaning of the name: the assembly of Lugh

The Old Irish name Lugnasad, later Lughnasadh, compounds Lug, the divine name of the god Lugh, with násad, a verbal noun meaning a formal assembly or games held in honour of someone. The compound therefore means the assembly of Lugh, or more precisely the games Lugh held in another’s honour. The standard scholarly reading, reflected in the definitive modern study and in Old Irish annalistic usage, prefers this assembly sense.

An alternative folk etymology links the second element to a word for death, yielding the death-commemoration of Lugh, which fits the festival’s origin in a funeral but is not the mainstream reading. What both readings agree on is that the festival is not Lugh’s own birthday or feast. It is something Lugh made for someone else.

The founding legend: Tailtiu and the funeral games

The medieval Irish corpus gives Lughnasadh a precise origin. In the Book of Invasions, in the edition of R. A. S. Macalister, Tailtiu is a Fir Bolg queen who becomes foster-mother to the god Lugh. After the Tuatha Dé Danann take dominance over Ireland, Tailtiu undertakes the clearing of a great forest to make the plain of Brega fit for agriculture, and dies of exhaustion when the work is done. Lugh, in grief, commands funeral games and a great assembly at her burial-mound at Teltown, Co. Meath, each year at the Calends of August.

The placename-poems known as the Dindshenchas, in Edward Gwynn’s edition, preserve the lore that ties Tailtiu to her mound and names Lugh’s lamentation for her. The same body of poems gives a Leinster parallel in the assembly at Carmun, celebrated on the first of August with horse-races, contests of poets, legal reckonings, storytelling and music. The Carmun poem records that on the first of August, every third year, they gathered and held seven races, one for each day of the week, for a glorious prize. These gatherings were royal, legal and festive at once: the óenach was a constitutional institution, not merely a market fair.

The assembly at Teltown, the Óenach Tailten, is recorded in the annals as having been held across the early medieval centuries, lapsing in the Viking age and being revived by assertive High Kings. Its most striking institution was the Teltown marriage, a handfasting union contracted at the assembly and dissoluble after a year and a day. The games continued until the Norman invasion of the late twelfth century.

How the festival survived: the pattern across Ireland

The definitive study of how the medieval festival survived into modern rural life is Máire MacNeill’s The Festival of Lughnasa, published by Oxford University Press in 1962. Drawing on hundreds of responses to a 1942 questionnaire titled Domhnach Chrom Dubh, supplemented by the Schools’ Collection and her own fieldwork, MacNeill identified over 195 Irish height-sites and water-sites where communities assembled on or around the last Sunday of July. She catalogued more than eighty local names for the day, among them Garland Sunday, Bilberry Sunday, Mountain Sunday, Fraughan Sunday and Domhnach Chrom Dubh, all pointing to the same Lughnasadh nucleus.

The core ritual pattern she identified ran as follows: the gathering or cutting of the first new crops, especially bilberries and new potatoes, at or near a hilltop; a communal meal of new potatoes with new bacon and white cabbage, followed by bilberry-picking; dancing, music, games and matchmaking; and, in many districts, faction fights. Underlying it was the folk legend of Crom Dubh, the Crooked Dark One, a withholding figure who held back the harvest or demanded a bull sacrifice, and against whom Lugh or a hero linked to him struggled and prevailed. MacNeill showed that this legend animated the hill-gathering across Ireland, giving it the quality of a seasonal drama played out in the landscape.

Reek Sunday: the living Lughnasadh on Croagh Patrick

The single most vivid living survival of the Lughnasadh hill-assembly is Reek Sunday, known in Irish as Domhnach na Cruaiche and by the folk name Domhnach Chrom Dubh. On the last Sunday of July, many thousands of pilgrims, in some years between fifteen thousand and thirty thousand, climb the 764-metre summit of Croagh Patrick in Co. Mayo to attend Mass at the summit oratory, receive the sacraments, and complete the rounding rituals: circuits of the summit cairns and stations made in a set order. Some climb barefoot as penance, and until 1970 it was traditional to begin the ascent after sunset.

The Christian layer of the site is recorded as early as the seventh century. Tírechán’s account of Patrick, written around 670 and translated by Ludwig Bieler, records that Patrick went up the mountain intending to fast there for forty days and forty nights after the example of Moses, Elijah and Christ, and remained on the summit while birds troubled him and he could not see the face of sky, land and sea. A later annal entry, carried in secondary scholarship as the earliest documentary reference to pilgrimage here, records a calamity striking those who kept vigil on the night of Patrick’s feast, though this particular entry is not verified directly for this entry.

MacNeill’s case for the pre-Christian layer is cumulative rather than resting on any single source. The timing falls precisely in the Lughnasadh window; the folk name Domhnach Chrom Dubh names the dark harvest figure rather than Patrick; the rounding rituals encircle pre-Christian cairns; and Croagh Patrick belongs to a family of over seventy Irish mountains climbed in the identical pattern on the same date. Her conclusion is not that the Christian pilgrimage is less genuine, but that the two traditions fused at this site, each reinforcing the other. Local Mayo testimony in the Schools’ Collection preserves both the legend of a bell ringing from the summit when the clergy tried to site the chapel elsewhere, the mountain insisting on its own centre, and the plain record that every year on the last Sunday of July there is a pilgrimage to Croagh Patrick, with Masses said on the hill from midnight through the following day.

Bilberry Sunday and the customs of the harvest

Across Ireland the Lughnasadh hill-gathering was inseparable from bilberry-picking. MacNeill wrote that no custom had been more lasting than the picking of bilberries, which gave the festival several of its names. As the food historian Regina Sexton has set out, drawing on MacNeill and on Michael Conry’s study of bilberry customs, the small dark fruit was central to the activities, games and food of the festival. The seasonal rule was precise: bilberries were not to be gathered after the first Sunday of August, for Crom Dubh, the dark and crooked figure of the harvest, had spat on them.

The ritual meal of new potatoes with new bacon and white cabbage was eaten before the climb; bilberries were gathered on the hillside and eaten there, strung on straw as sweethearts’ bracelets, or carried home for those too old to climb. A Mayo custom recorded in the Schools’ Collection describes girls chosen to make fraughan pies, eaten between the dancing and the singing. Kevin Danaher’s The Year in Ireland records the broader harvest customs of the season: the first digging of new potatoes, the weaving of harvest knots from the first-cut corn, and the hiring fairs that marked the turn.

Puck Fair and the limits of the evidence

Puck Fair at Killorglin, Co. Kerry, held each August and centred on the crowning of a wild mountain goat as King Puck, has drawn debate about its Lughnasadh credentials. MacNeill included it in her survey, arguing that the he-goat as a fertility symbol and the August timing fitted the harvest-assembly pattern. The fair’s own published history acknowledges the pre-Christian fertility theory alongside later legends.

The earliest documented charter is a 1613 grant by King James I giving legal status to a fair already running at Killorglin, not 1603 as popular accounts sometimes state. The charter describes the fair as already established, which means it predates the written record, but it cannot establish antiquity reaching back to the era of Lughnasadh. The careful position is that Puck Fair may preserve elements of the harvest-assembly pattern, while no medieval Irish text names or describes it, and the goat-king ritual cannot be traced to any pre-Norman source.

The Tailteann Games and the modern survivals

The 1924 Tailteann Games, held in Dublin that August after a delay caused by the Civil War, were a conscious revival of the medieval Óenach Tailten by the new state. Athletes from Ireland and from Irish communities across the world competed in athletics, hurling, rowing, swimming, chess and cultural contests. Further games followed in 1928 and 1932 before the revival lapsed. The National Library of Ireland marked the centenary of the 1924 games in 2024. The revival showed that the Lughnasadh ideal, communal assembly and collective identity through games and culture, kept genuine civic power.

The Ould Lammas Fair at Ballycastle, Co. Antrim, whose earliest charter dates to 1606, likewise preserves the harvest-season gathering without naming the connection. Brian Friel’s play Dancing at Lughnasa, which had its premiere at the Abbey Theatre in 1990, brought the name back into wide consciousness; set in 1930s Donegal, it won multiple awards and its 1998 film adaptation carried the name further still. Reek Sunday, for its part, needs no modern revival: it sustains itself year after year through living faith and living custom on the mountain.