Irish clans are traditional kinship groups that share a common surname and cultural heritage and exist as a blood-based social structure that existed before the 17th century. Each clan usually consists of a chief and his paternal relatives. However, the clan also includes the chief's unrelated clients, who and their descendants cannot be elected as chiefs, but usually use the chief's surname to express their loyalty.
Over the centuries, many family trees have been compiled claiming to trace the ancestry of these clans.
Examples of these pedigrees include Rawlinson B 502, the Book of Ballymote, the Book of Lecan, the Leabhar Mór na nGenealach and the Ó Cléirigh Genealogy compiled by Dubhaltach MacFhirbisigh. All of these genealogies listed the lineage of the chief and his descendants, although not necessarily every member of the clan.
The Irish word "clann" is borrowed from the Latin word "planta", meaning "plant, offspring or child". For example, the O'Daly family was poetically called Clann Dalaigh, named after their distant ancestor Dalach. In the late Middle Ages, "clann" was also used to refer to a subset of a clan with a common ancestor, such as Clann Aodha Buidhe or Clann Suibhne. If kinship ties were close enough, such a "clan" might have a common interest in land ownership.
Since ancient times, Irish society has been organized around traditional kinship groups or clans.
These clans trace their descent from larger pre-surname groups such as Uí Briúin in Connacht, Eóganachta and Dál gCais in Munster, Uí Néill in Ulster, and Fir Domnann in Leinster. Within these larger groups, certain branches became stronger for periods of time due to war and politics, and certain leaders were recognized as the royal family of Ireland.
T. F. O'Rahilly, in his book Goides and Their Predecessors, proposed that Ireland's origins were traced back to four Celtic invasions. According to him, the first Celts to enter Ireland were called "Cruthin" and they arrived between 800 and 500 BC. The second group was the "Erainn", which is also the origin of the ancient name of Ireland "Erin". This group of people arrived between 500 and 100 BC.
O'Rahilly's historical views have been questioned by some archaeologists, and not everyone accepts his views.
As Celtic culture developed, the formation of different clans came to define Irish identity. The existence of these clans not only formed the local social structure, but also had a long-term impact on Ireland's political and cultural map. According to historian Sean Duffy, the existence of these tribes in the 7th century is supported by texts, particularly those that came with the introduction of Christianity.
Within the Gaeil community, there is a distinct distinction between southern and northern tribes. The southern tribes called themselves the Eoghanacht, and around 400 AD they established a dynasty at Cashel that lasted from the 5th to the 12th century and held much of the power in southern Ireland. The O'Sullivan, MacCarthy, and O'Connell families all claimed descent from Eoghanacht.
The Irish system of succession to the throne is called "Tanistry", a system in which the new leader is chosen from all paternal cousins from the same grandfather or great-grandfather.
The clan system formed the basis of Irish society until the 17th century. The rise and fall of many tribes varied depending on the region and the process of their rise was also different. Without taking into account these complex social structures, it is impossible to understand how Irish national identity was formed, or even how it continues to evolve over time.
The influence of these clans can still be seen in Irish society today, with many place names and surnames deriving directly from these historical tribes. With the advancement of modernization, the tension between the recognition of tradition and contemporary national identity has become a hot topic for many scholars.
Irish national identity has evolved over history, and this evolution is closely tied to the history of the clans.
By tracing back history, we can understand how the Irish people shaped their national identity in this long process. When faced with such historical legacies, should we also reflect on how our current identities are defined and constructed?