HOWTO: Rename a wallet file
To rename a wallet on your Windows PC, close eWallet, then use Windows Explorer to navigate to the folder (usually My Documents) where you saved the wallet. Right-click the wallet file and choose Rename.
On Mac OS X, quit eWallet, then use Finder to navigate to the folder (usually Documents) where you saved the wallet. Click the name of wallet file and then change it to what you want.
iPhone / iPad / iPod touch
Choose the pencil icon on the list of wallet files, then press the blue ">" icon next to the wallet you want to Rename. Finally, press the Wallet Name button and chance the name to what you want.