My parents always said that they wouldn't call any of their children by nicknames, but I became Leash. Or Mir-Alycia (A mixture of my older sister's name and mine). I actually have been called Mir-Mor-Ben-Alycia before (three of my siblings' names smushed on mine). I'm surprised I wasn't ever called Talycia (My oldest sister's name starts with a T).
I guess those aren't nicknames, though.