A few stone inscriptions survive from Italy and Spain of Iron Age Celts but there are no examples from Britain. Here word of mouth and memory were societies' means of recording events.
There has been a tendency to use Early Medieval texts from Wales and Ireland, for example the Mabinogi, as reflecting life at this time. However these literary sources were written over a thousand years later than the Iron Age. Story-telling remained a means of maintaining folk memory, but society and religions had changed dramatically during this time.