I'm not sure yet how to spell it. It might be Gogee. Or Gogey. It has two hard g sounds, a long o and a long e sound.
This is the nickname Grayson has taken to calling Finley. The first time she said it, we both looked at her and said "what?!" and laughed because it was so odd (as a sidenote, when Grayson names things, they are usually odd combos of constants and vowels, it's quite funny).
Now (of course, because we laughed) it has stuck. Needless to say, Finley smiles every time she hears it.