I love
Jem as a nickname, for either a boy or a girl.
Jeremy nn
Jem is on my short list. I wouldn't use it as a full name, but it works as a spunky nn.
Jerome nn
Jem would also work.
With
Frey, I just can't get past the word fray, and I don't find the sound attractive at all. Which is weird, because I love
Freya and don't have either problem with it. Funny how much difference one little letter can make.
http://www.behindthename.com/pnl/56287