My birth name is Katherine but my parents gave me the nickname of Kayley - it's a combo of my first & middle names. Kayley is the name I introduce myself as, so a lot of people, unless I went to school with them, have no idea my name is even Katherine. I only know of one other person who has a combo of their first and middle name.
Does anyone else have a nickname made from a first name/middle name combo? Does anyone else go by a nickname not commonly derived from their birth name?