In my high school Asian Cultural Society, or as many would call anime club, we were trying to figure out our American names in Japanese. My name is Nicole, so we thought change C to K and L to R and voila, Nikore (which is now a nickname). My college sensei told me that it's actually Nikoru. The Phantomhive part is pretty obvious. I love me some ciel!!!! X3 Plus it's one of the coolest last names I've ever heard.
Therefore, My first name in Japanese + a cool anime last name = NikoruPhantomhive