The reconstructed Proto-Celtic lexica at the universities of Leiden[3] and Wales[4] suggest that this name may be derived from Proto-Celtic *Ad-bej-ānos, literally meaning at-striking-related-one and possibly denoting the concept of harp-strumming. The Romano-British form of this name, if it existed, might plausibly have been *Abeianos.
Bibliography
Ellis, Peter Berresford, Dictionary of Celtic Mythology (Oxford Paperback Reference), Oxford University Press, (1994): ISBN 0-19-508961-8
Wood, Juliette, The Celts: Life, Myth, and Art, Thorsons Publishers (2002): ISBN 0-00-764059-5