Peter Berresford EllisPeter Berresford Ellis, is regarded as one of the pre-eminent Celtic scholars and has published many books on the subject. He is a Fellow of three Royal Societies in historical and antiquarian fields and the recipient of many awards and honours for hs work. He is also, under the pseudonym Peter Tremayne he is the author of the bestselling Sister Fidelma murder mysteries set in Ireland in the 7th Century. Read More Read Less