Vivien Celtic Knot Irish Watch. Ladies long rectangle silver-plated bracelet watch, 20x8mm (3/4" x 1/3") Celtic etched design on bracelet arms and matching etched design on pink Mother of Pearl stone set dial. Japanese quartz movement. Vivien - Lady of the Lake Celtic water Goddess. From the Breton tale, one of the many names (also Nimue) of the Goddess that protected her Otherworld castle with invisibility, became the guardian of the sword, especially when the dying King Arthur returned Excalibur to the lake.