- Welcome to the Barony of Adiantum, the pearl of the Gryphon Coronet in the Kingdom of An Tir. Adiantum (located modernly in Eugene, Oregon) is a branch of the Society for Creative Anachronism, Inc.. In these pages you will find information about the Society for Creative Anachronism and about the Barony itself. This site has been expanded to include some of our projects as well as dates, times ...www.adiantum.peak.org