The first time I saw it was in a fanfiction set during the first world war.
Peter makes much more sense as a name from that time period. They didn't change Katniss' name though, and they still had characters like Clove in it unchanged, so it was rather unnecessary.
**
Emma**
http://www.behindthename.com/pnl/54547
Favourites:
Eve,
Alice,
Norah,
Isla //
George,
Charlie,
Arthur,
Oscar