Peachy! Merriam-Webster checks in...
We get a lot of questions that are in the realm of where did Peachy the name come from. We defer to Merriam-Webster!
http://www.merriam-webster.com/dictionary/peachy
Main Entry: peachy
Pronunciation: \ˈpē-chē\
Function: adjective
Inflected Form(s): peach·i·er; peach·i·est
Date: 1599
1 : resembling a peach
2 : unusually fine : dandy