 The 9th-century "Historia Brittonum" also refers to this tale, with the boar there named Troy(n)t. Finally, Arthur is mentioned numerous times in the Welsh Triads, a collection of short summaries of Welsh tradition and legend which are classified into groups of three linked characters or episodes to assist recall.The later manuscripts of the Triads are partly derivative from Geoffrey of Monmouth and later continental traditions, but the earliest ones show no such influence and are usually agreed to refer to pre-existing Welsh traditions.Even in these, however, Arthur's court has started to embody legendary Britain as a whole, with "Arthur's Court" sometimes substituted for "The Island of Britain" in the formula "Three XXX of the Island of Britain".