Art Mór’s First Year1357 CE

Dateline

The evidence for Ireland in 1357 is unusually revealing precisely because it is uneven. Official records from the English lordship, a contemporary English chronicler and Irish annals preserve different sorts of fact: offices and commissions around Dublin; a reported renewed visitation of plague; warfare and settlement in Leinster; and, in the north and west, the deaths, killings and negotiated peace recorded by Gaelic learned communities. None provides a complete national picture. Together they show an island governed through several overlapping political worlds rather than a single state.

A Child in a Contested Leinster

One event conventionally placed in 1357 was the birth of Art Mór Mac Murchadha Caomhánach, later the formidable king of Leinster. Little can responsibly be said about his birth beyond the year and his parentage: he was the son of Art Mac Murchadha, a leading figure of the Mac Murchadha dynasty, and of a daughter of Philip Ó Broin. It would be misleading to project his later reputation backwards on to infancy. Yet the circumstances of 1357 mattered. He was born into a Leinster in which his father’s family, the Ó Broins of the Wicklow uplands, the Dublin government and the settler lordships of the Barrow valley were repeatedly making and breaking practical alliances.

During February to April, Art Mac Murchadha senior fought against other Leinster Irish groups while reconciling with the sons of Domhnall Mac Murchadha and with the English administration. The settlement brought him recognition from Edward III as head of his lineage and a royal fee. This was neither simple conquest nor simple submission. It shows a frontier politics in which a Gaelic ruler could be a paid ally of the crown against neighbouring Irish communities, while retaining his own authority, followers and local ambitions. Sir John Ó Broin, whose resistance had prolonged the conflict in east Leinster during 1356, also submitted in 1357.

Such agreements were fragile. Later events would show Art Mac Murchadha again pressing into the Barrow corridor, while the Mac Murchadha kindred became a sustained challenge to English settlement. But that belongs to the years after 1357. In this year, the more important point is that diplomacy and military service were inseparable. Payments, recognition, hostages, local kinship and access to routes through the mountains all shaped political allegiance. The future Art Mór was born into that contested landscape, not into a settled kingdom.

Dublin Authority and Its Limits

The lordship of Ireland remained formally subject to Edward III, but royal authority depended upon officials, magnates and religious institutions operating from Dublin and the eastern counties. John de Frowyk, prior of the Irish Hospitallers at Kilmainham and chancellor of Ireland, appears in a royal commission of 1 March 1357 alongside the justiciar Thomas Rokeby and other leading men. The commission of oyer and terminer, a special judicial inquiry, is a reminder that government still claimed the capacity to investigate offences and dispense law. Its reach, however, was not the same as effective control across the island.

Later in the year Maurice fitz Thomas FitzGerald, fourth earl of Kildare, served as justiciar or deputy justiciar from September to November. His appointment underlines the dependence of the Dublin regime upon great Anglo-Irish landholders. Kildare’s estates lay close to the vulnerable approaches west of Dublin and towards the midlands; he could supply local power that the crown itself lacked. A later annalistic compilation associates 1357 with a grant of an annual £500 fee for his office, conditional on maintaining a mounted military following. That detail should be treated cautiously: it is a retrospective report rather than a surviving 1357 enrolment quoted in full. Even so, it accurately conveys the military expectations placed upon a chief governor in a lordship where office required resources, retainers and horses as well as legal authority.

The administrative record therefore gives no grounds for imagining a quiet or securely governed colony. Rather, it records a government managing its own personnel while relying on negotiated local relationships. The crown’s wars in France and against Wales also drew attention and service outward from Ireland. Dublin could issue commissions, but its officials had to work with magnates such as Kildare and with Irish rulers whose assistance was contingent and reversible.

Death, Succession and Violence

Annála Connacht dates its entry for 1357 with unusual calendrical care, beginning the year on a Sunday and supplying lunar, indictional and solar-cycle information. Its following notices nevertheless caution against treating the annal as a modern diary. It records what its compilers and their sources considered memorable: the deaths of rulers and learned men, violent changes in lordship, and one peace. The Annals of Ulster preserve many of the same notices under a different annal-number, while explicitly giving the equivalent Christian year as 1357. Such cross-checking is important where medieval annalistic year headings can drift.

Magnus Mag Mathgamna, king of Oriel, died. His death concerned a lordship centred on the modern Monaghan area and the borderlands of Ulster, a region where the Mac Mahons had become major political actors. Lochlainn, son of Muirchertach Ó Conchobair, also died. These brief notices offer no cause of death and should not be turned into invented succession dramas. Their significance lies in the regular turnover of senior figures in a political order where lordship rested on kin groups, clientage and military capacity.

The annal also reports that “the Earl of Desmond” drowned while crossing over. It does not name him or specify the water. The likely identification is Maurice FitzGerald, second earl of Desmond, whose death is placed in 1357 by later genealogical material; modern scholarship commonly connects the episode with a drowning in the Suir. But the contemporary annal itself must set the limit of certainty: an earl died by drowning during a crossing. Whether on river or sea, the notice is a small but sharp reminder that travel between lordships could be dangerous without warfare.

Other entries are unequivocally violent. Fedlim Ó Domhnaill and his son Ragnall were put to death in captivity by Seán Ó Domhnaill. In the Route, north of Lough Neagh, Brian Ó Ruairc and Magnus Buí Mag Samradhain were killed by Aodh Ó Néill. These were not marginal disturbances. Captivity, execution and targeted killing were instruments through which rival kindreds contested rank, land and following. Yet warfare did not preclude negotiation. The same annal records a “general peace” between two rival Cathals: Cathal, son of Aodh Brefnech, and Cathal Óg, son of Cathal son of Domhnall. Its geographical scope and terms are not supplied, so it cannot be presented as an island-wide settlement. It was, however, a meaningful local accommodation in a year otherwise marked by loss and conflict.

Plague: A Necessary Caution

Geoffrey le Baker, an English contemporary chronicler, stated that a later outbreak of the pestilence in 1357 caught the Gaelic Irish unawares and devastated them. His statement is central to why 1357 is often associated with a renewed phase of the Black Death in Ireland. It should be used carefully. The phrase “Black Death” is modern, not contemporary; the Irish annals’ entries for this particular year do not provide a matching island-wide mortality record; and Le Baker’s sweeping contrast between English settlers and Gaelic Irish reflects the limits and assumptions of an outsider’s viewpoint.

Nevertheless, the report belongs firmly in the year’s history. The first great outbreak had reached Ireland in 1348–50, striking ports and densely connected settlements especially hard. A recurrence in 1357 is entirely plausible within the wider pattern of repeated late-medieval plague. What cannot be recovered is a reliable parish-by-parish map, a precise death toll or an exact chronology for every region. The responsible conclusion is that 1357 was remembered by a near-contemporary observer as a year in which epidemic mortality reached Gaelic communities with terrible force, while the surviving Irish evidence is too sparse to measure that experience directly.

Learning, Music and the Church

The annals’ obituaries show that political history was only one part of what contemporaries thought worth preserving. Fergal Muimhnech Ó Duibhgeannáin, ollamh of the Conmaicne and of northern and southern Clann Mhaoilruanaid, died in 1357. An ollamh was not simply a literate clerk but a recognised master of learning, attached to a hereditary scholarly milieu that could preserve law, genealogy, history and literary culture. His death marked the loss of expertise serving several communities in Connacht and Breifne.

Matha, son of Tomás Ó Ruairc, was remembered as “head of the prowess of Brefne”, a formula signalling military standing; Mac Raith Mag Erraig as a man of broad accomplishment; and Donn Sléibhe Mac Cearbhaill as an accomplished musician. The parallel notices matter. They show that status was articulated through martial leadership, scholarship and artistic skill alike. Clement Ó Duibhgeannáin, vicar of Kilronan, also died, placing clerical office within the same web of local learned families and patronage.

These entries do not permit a detailed reconstruction of household routines, farming yields or market traffic in 1357. They do show, however, that culture endured through specialists whose names, offices and reputations could be recorded alongside kings and captives. Ireland’s political fragmentation did not mean cultural isolation. It supported networks of clerics, musicians and learned lineages whose work connected lordships across regional boundaries.

A Year of Interlocking Worlds

In 1357, then, Ireland was not moving in one direction. In Leinster, the Mac Murchadha reconciliation temporarily aligned Gaelic leaders with the English administration, even as the structures of later conflict were taking shape. In Dublin, royal justice and gubernatorial office continued, but depended on men whose influence came from landed power as much as crown commission. In Oriel, Connacht, Breifne and the Route, deaths and killings altered local balances. A peace between two Cathals demonstrates that settlement could be as significant as battle. The reported return of pestilence added a grave uncertainty whose human scale cannot now be fully calculated.

The year’s surviving record is therefore not a chronicle of national unity but of connected local histories: a child born into a disputed Leinster dynasty; a chancellor participating in royal judicial machinery; an earl lost while crossing water; captives executed; scholars and a musician mourned; and a disease remembered, if imperfectly, as devastating. That is the texture of Ireland in 1357—politically divided, culturally articulate and acutely vulnerable to violence, mortality and the shifting bargains of power.