Knockmany: Oonagh, Fin M’Coul and the giant defeated at the cradle

In the version printed in Joseph Jacobs’s Celtic Fairy Tales, Fin M’Coul and his men are building a bridge towards Scotland at the Giant’s Causeway. Fin suddenly decides that he ought to visit his wife Oonagh. He pulls up a tree for a walking stick and heads home to the top of Knockmany.

The narrator soon lets the reader in on the real reason for his concern. Another giant, Cuhullin, is seeking a trial of strength. His reputation is terrifying: he can shake the country with a stamp and is said to have flattened a thunderbolt into something resembling a pancake.

This is a comic giant tale using familiar heroic names, not a straightforward chronology of the older heroic cycles. The narrative works through exaggeration, conversation and the difference between Fin’s public confidence and his private fear.

Neighbours question why Fin has built on such an exposed, windy hill with an awkward water supply. He answers that he likes a good prospect and intends to finish a pump when the Causeway is complete.

The narrator gives another explanation: it is an excellent lookout from which to see Cuhullin approaching. Nearby Cullamore and the wider Ulster landscape appear in the telling, while the story’s scale keeps stretching from a household to the whole countryside.

Fin’s prophetic thumb tells him that the rival is approaching and will arrive the following afternoon. His great strength cannot resolve his predicament without a humiliating flight or a dangerous confrontation. Oonagh notices his worry and takes charge of the preparations.

Before setting her plan in motion, Oonagh braids nine coloured woollen threads into three plaits, placing them at her arm, heart and ankle. In the tale, these actions assure success. They are part of the story’s supernatural household equipment, alongside Fin’s knowing thumb and the rival’s powerful finger.

She borrows twenty-one iron griddles and conceals them in twenty-one cakes of bread. She also prepares curds and whey. These are the crucial ingredients in the performance that follows: one food will appear impossibly hard, the other will seem to be a stone squeezed until water runs out.

Finally she puts Fin in a cradle and tells him to remain there as his own child. The large, anxious champion becomes the hidden participant in a trick managed through hospitality and conversation.

When Cuhullin arrives, Oonagh tells him that Fin has gone to find the troublesome giant at the Causeway. She treats the visitor as much smaller and less formidable than the husband who is supposedly absent.

She then asks him to turn the house so the wind no longer blows through the door, describing it as a routine task Fin performs. He obliges. Asked to deal with the lack of water, he tears open the rock below the hill; the narrative associates the resulting cleft with Lumford’s Glen.

Each task increases Fin’s alarm while strengthening Oonagh’s deception. Cuhullin is not merely told that the absent householder is formidable. He is induced to carry out enormous feats while believing that they are ordinary chores for a stronger man.

Inside, the visitor bites into the prepared bread and breaks his teeth against the hidden iron. Oonagh explains that it is simply the bread Fin always eats. When the supposed baby complains of hunger, she gives him an ordinary cake, which he swallows easily.

Cuhullin’s judgement of the household changes. If the child can comfortably eat what defeats him, the father must be a far more dangerous opponent. Fin then takes part in another demonstration, offering the visitor a white stone and asking him to squeeze water from it.

The rival cannot do it. Fin secretly exchanges the stone for the curd and squeezes out the whey. The trick gives a familiar household material the appearance of supernatural strength, making the tale’s ingenuity visible to readers even while its victim remains deceived.

Cuhullin decides to leave without meeting Fin. Before departing, however, he asks to feel the extraordinary child’s teeth. Oonagh directs him to put his finger well into the mouth.

The tale has already established that the giant’s strength resides in the middle finger of his right hand. Fin bites it off. Once the rival’s power has gone, he leaves the cradle and overcomes him. The ending is much harsher than a version in which the visitor simply runs away.

Jacobs explicitly attributes this tale to William Carleton’s Traits and Stories of the Irish Peasantry. That credit matters: the text is a named nineteenth-century literary rendering of tradition, not an anonymous ancient manuscript or a modern report from a visitor to the cairn.

Knockmany’s ancient burial monument belongs to the hill’s archaeological history. The modern forest and the decorated stones of the chamber provide tangible reasons for the place to attract visitors quite apart from the giant story.

The folklore should not be used to date the monument or identify its builders as the characters in Carleton’s tale. Its value here lies in the named relationship between a story and a real place: a prominent hill becomes a lookout, a household and a theatre for an impossible contest.

The licensed landscape photograph was taken from the burial-chamber area looking across the Clogher Valley. It shows the actual setting rather than an invented image of the giants. The map uses that hill-area reference and keeps this Northern Irish tradition distinct from other places across the island of Ireland.

Although Fin’s name is better known, the plot depends on Oonagh. She reads the situation, stages the visitor’s assumptions, controls the food and creates the role her husband must play. Her small domestic substitutions do what his physical power cannot.

That makes Knockmany a useful companion to other place-based mysteries in this archive. It preserves an enduring supernatural story in enough detail to show its character, rather than reducing the hill to a pin labelled ‘giants’. The Fairy Flag similarly shows how different recorded traditions can attach themselves to a real historic place.

Legendary setting: Fin’s Causeway-building, rival giant and Knockmany household have no historical incident year assigned here.

Nineteenth century: William Carleton’s version enters the printed tale tradition.

1890: Jacobs’s Celtic Fairy Tales includes the story and credits Carleton.

Modern landscape: the ancient cairn and hill remain separate physical features through which to explore the place.

Joseph Jacobs, Celtic Fairy Tales: A Legend of Knockmany — Full public-domain story and source note crediting William Carleton; illustrations by John D. Batten.

NI Direct: Knockmany Forest — Official forest-location reference; archaeological and access details should be checked through the relevant heritage information.

Knockmany Hill landscape — Kenneth Allen’s 2006 photograph supplies a verified hill-area reference and landscape context.