Celto-Cymric en · ADJ
Etymology
From Celto- + Cymric.
Meanings
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(not-comparable) Of or pertaining to people of Brittany having both Gaulish Celtic and Welsh ancestry.
To poetry and music, indeed, the whole Celto-Cymric race seem to have been strongly addicted; and, independently of the materials which Brittany may have supplied for the history of Geoffrey of Monmouth, many other true or romantic adventures were narrated by the Breton poets in their Lais.
1850, Thomas Keightley, The Fairy Mythology, London: H.G. Bohn, page 419: