Most of us grew up fascinated by legends especially those centered on wizards, magic, sorcery, dragons, knights, maidens, castles, and the perennial scary forest with trees that came to life in ominous ways. Surprisingly as adults, those childhood fantasies evolved into plausible explanations of the historical sources of legends.   From TV to movies, from books to storytelling, we remain fascinated by the essence of legends and the morality tales that emanate from age-old legends. Merlyn Fuller, author   (photo provided) Merlyn Fuller fully understands this phenomenon and has authored a compelling telling of the Merlin legacy.   Here is an excerpt from the Introduction to her book, The Merlinian Legend   being premiered this month in readings and performance,    The Blessed Bairn of Beltane In days of old, when all things past had not since turned to dust nor had stories been turned into legend nor legend into whispered lor...