Rath Ó Dubhda

Dún Fhíne Uachtarach ‐ A Fort Bearing the Ó Dubhda Name ‐ near Ballycastle, Co. Mayo

Before there were tower houses, before there were bawns, before there was stone, there was a rath. The Ordnance Survey walking party of 1838 wrote down a fort called Rath Ui Dubhda in the parish of Doonfeeney, a quarter-mile north-west of the old church, close to the holy wells of St Derbile and St Brendan. It is one of very few places in the Ó Dubhda landscape to carry the clan’s name. Which Ó Dubhda gave the rath its name ‐ the ancient eponym or a later family of the parish ‐ cannot now be known, but the name, the wells, the church, and the great standing stone just across the road make this a landscape worth knowing.

I. What a rath is, and why it matters here

A rath (ráth, ringfort, enclosure) is a circular earthwork — a bank and outer ditch enclosing an inner yard of twenty to forty metres across. Some forty-five thousand survive in Ireland. They were built in very great numbers between roughly the fifth and the tenth centuries, and they served as enclosed farmsteads, defended homesteads, and the seats of local lords. In simple terms, a rath is where a well-established family lived before the arrival of the stone castle.

That the Ó Dubhda should be identified with a rath, and not with a castle, is not an accident of survival. The ringfort tradition in Ireland ended in the eleventh or twelfth century, before the Anglo-Norman castle-building habit reached north Connacht. If the Dubhda of the clan’s origin-story lived in a fortified place at all, it would almost certainly have been an enclosure of this kind.

II. The primary attestation — O’Donovan, 1838

The only evidence for the rath is the Ordnance Survey Letters for Mayo, written by John O’Donovan and Thomas O’Conor in 1838. Describing Doonfeeney, the Letters note the ruined church, the old graveyard and the pillar-stone; a modern summary of that account (Maeve Dunne, mayo-ireland.ie) reports:

“About a quarter-mile N.W. of the church, near a fort called Rath Ui Dubhda, were St. Derbile’s and St. Brendan’s wells, at which Stations were performed in 1838.”

The Ordnance Survey men were not putting forward a theory; they were noting down what local people called the place. Of all the raths in the old parish of Doonfeeny, this one carried the clan’s name ‐ Rath Uí Dubhda, “Ó Dubhda’s rath”.

III. The sacred neighbourhood

The rath did not stand alone. A short walk south-east of the spot O’Donovan described stands the old ecclesiastical site of Doonfeeney: a medieval parish church (named in a letter of Pope Innocent III in 1198), an old graveyard, and the great Doonfeeney standing stone. The stone is about five metres high, one of the tallest surviving in Ireland; two incised crosses on its face record its absorption into Christian use in the early medieval period. The wells of St Derbile (Deirbhile, patron of Erris) and St Brendan lay beside the rath, north-west of the church, and as O’Donovan’s letter tells us, pilgrimage stations were still being performed at them in his own day.

This is not a fortress on a military frontier. It is a spiritual landscape — an ancient stone, a medieval church, two holy wells, and, at its centre, a rath carrying the clan’s name.

IV. Dubhda — and the making of the surname

Who was the Dubhda whose name the rath carries? The medieval genealogies compiled at the Mac Firbhisigh scholarly castle at Lecan trace the Ó Dubhda dynasty to a ninth-century ancestor, Dubhda mac Connmhach, of the northern Uí Fiachrach. The family descended, in the paternal line, from the Connachta Uí Fiachrach Muaidhe, whose kings had ruled north Connacht since the seventh century.

The eponym Dubhda — Old Irish for “dark one” — hardens into a hereditary surname late in the tenth century. The Annals of Ulster record under AD 982 that Aedh ua Dubdai, king of the north of Connacht, “dies an untroubled death”; the Four Masters place his death in 983. Ua Dubhda — “grandson of Dubhda” — is among the earliest hereditary surnames recorded in Ireland, and the family have borne it continuously for more than a thousand years.

We cannot prove that the man from whom the surname came lived at this particular rath in this particular townland. Nothing in the surviving documentary record ties him to the spot. What we can say is that by 1838, when the Ordnance Survey recorded the place, local people knew this rath by the clan’s name.

V. Dún Fhíne Uachtarach

The modern townland of Doonfeeny Upper ‐ Dún Fhíne Uachtarach, the upper division of Dún Fhíne, which O’Donovan glossed as “Feeny’s fort” ‐ runs to some 640 acres of the north-Mayo coast, rising inland from the Céide Fields. Dún is a word for a fort, and the parish takes its name from one; the medieval genealogies name the hereditary families of Dún Fíne as Ó Cuinn, Mag Odhráin and their kin, not the Ó Dubhda. Whether the dún of the townland name and the rath of the 1838 letter are one and the same enclosure cannot now be demonstrated; several ringforts are recorded in the wider parish. Field-identification of the physical site with confidence is work still to be done.

VI. Visiting today

The village of Ballycastle sits on the R314 road, about twenty-three kilometres north-west of Ballina. The old Doonfeeney church stands three kilometres north-west of the village, and is accessible: the church ruin is inside the old graveyard, and the great standing stone, nearly five metres tall, stands just across the road. The two holy wells lie in the fields nearby. The rath named by O’Donovan — “a quarter-mile north-west of the church” — has not been formally identified to the clan’s knowledge, and should not be searched for on private farmland without the landowner’s permission. The walk from the standing stone, with the sea to the north and the church behind, is enough to stand in the landscape the 1838 letter described.