I usually name most of my Pokemon... specially my Starter <3
I can't stand not having somthing from a trade nicknamed >.>
It makes it seem so... bleh D=
I remember naming my Pikachuu in yellow "Paprika" for no apparent reason xDD
and the Origin for "Torchy" and "Torcher" came from ... maybe a Torch's flame? (This was for Torchic {Now, my Blaziken})
Pyro, My Infernape, I remember very clearly. I named it "Pyro" because 'Pyro' meant fire (I think), and Chimchar/Monferno/Infernape was a fire-type =3
"Charlie" came from a fic I read... I thought it was good, so I used it for my Charmander/Charmeleon/Charizard, just like the person in the fic did o_O