CONTENTS Page EDITORIAL 2 PENRHOS CASTLE 3 By Frank Olding ABERGAVENNY CASTLE 1087-1537 17 By Neil Phillips TIDAL DIALS FOR THE BRISTOL CHANNEL 32 By Bill Linnard NONCONFORMITY IN THE TOWN OF NEWPORT 39 By G. W J. Lovering BIG PIT BLAENAVON A NEW CHRONOLOGY? 54 by J. A. H. Evans cover: Pit top and surface workers, including two women, at Big Pit Blaenavon, c.1885. (Courtesy Francis Keen)