A fili was a member of an elite class of poets in Ireland, up into the Renaissance, when the Irish class system was dismantled.

Elite Scholars

Eleanor Hull's Textbook of Irish Literature says:

"The file is to be regarded as in the earliest times as combining in his person the functions of magician, lawgiver, judge, counsellor to the chief, and poet. Later, but still at a very early time, the offices seem to have been divided, the brehons devoting themselves to the study of law, and the giving of legal decisions, the druids arrogating to themselves the supernatural functions, with the addition, possibly of some priestly offices, and the filí themselves being henceforth principally as poets and philosophers. The division seems to have already existed in Ireland at the time of St Patrick, whose preaching brought him into constant opposition with the druids, who were evidently, at that time, regarded as the religious leaders of the nation, though there does not seem to be much sign that they were, as they undoubtedly were, even at an earlier age in Britain and Gaul, sacrificing priests."

Oral Tradition

The fili maintained an oral tradition that pre-dated the Christianization of Ireland. In this tradition, poetic and musical forms are important not only for aesthetics, but also for their mnemonic value. The tradition allowed plenty of room for improvisation and personal expression, especially in regard to creative hyperbole and clever kenning. However, the culture placed great importance on the fili's ability to pass stories and information down through the generations without making changes in those elements that were considered factual rather than embellishment.

In this manner, a significant corpus of pre-Christian myth and epic literature remained largely intact many centuries into the Christian era. Much of it was first recorded in writing by scholarly Christian monks. The synergy between the rich and ancient indigenous oral literary tradition and the classical tradition resulted in an explosion of monastic literature that included epics of war, love stories, nature poetry, saint tales and so forth which collectively resulted in the largest corpus of non-Latin literature seen in Europe since Ancient Greece.

See Early Irish literature for more details.

Decline

The ultimate accommodation of Christianity within Irish Gaelic society resulted in a strain on the resources of the Chiefs and in that they were required to provide land and titles for both fili and bishop alike. Consequently, a decision was made in the 6th century to limit the number of fili to certain families who were respected and believed to be poets as a birth right. The greatest of these families included the Ó Dálaigh (O'Daly), several of whom were accorded the rank of 'chief ollamh of poetry of all Ireland,' and O'Higgins who were hereditary filí in more than one Gaelic house such as The O'Conors, The MacDermotts, The McDonagh and O'Doherty. The hereditary poets that were a fixure of court life in medieval Ireland serving as entertainers, advisors and genealogists maintained practices of and enjoyed a similar status as the pre-Christian fili. But from the 12th century onwards, Anglo-Norman elements had increasing influence on Irish society. As Gaelic culture waned, these folk became increasingly involved with written literature and such non-native traditions as heraldry. Eventually classical literature and the Romantic literature that grew from the troubadour tradition of the langue d'oc superseded the material that that would have been familiar to the ancient fili.