At first, they were not written down, but recited in hall and with a harp's accompaniment by the various bardic story-tellers who were attached to the court of the chieftain, or wandered singing and reciting from court to court.

Each bard, if he was a creator, filled up the original framework of the tale with ornaments of his own, or added new events or personages to the tale, or mixed it up with other related tales, or made new tales altogether attached to the main personages of the original tale--episodes in their lives into which the bardic fancy wandered.

If these new forms of the tales or episodes were imaginatively true to the characters round which they were conceived and to the atmosphere of the time, they were taken up by other bards and became often separate tales, or if a great number attached themselves to one hero, they finally formed themselves into one heroic story, such as that which is gathered round Cuchulain, which, as it stands, is only narrative, but might in time have become epical.

Indeed, the Tain approaches, though at some distance, an epic.

In this way that mingling of elements out of the three cycles into a single Saga took place.
Then when Christianity came, the Irish who always, Christians or not, loved their race and its stories, would not let them go.