By Denny Dyroff , Entertainment Editor, The Times  Gillian Grassie Unionville’s Gillian Grassie likes a lot of variety in her life. After growing up in Chester County, the talented multi-media artist has lived, on the East Coast, in Europe and on the West Coast. Grassie is an award-winning, internationally touring harpist/singer-songwriter who has performed in France, Germany, India, China, Canada,...