If you no longer need your wallet you have the option of deleting it. By clicking the “Delete Wallet” link in the wallet setting will lead to the Delete Wallet screen, enter your wallet address and click “Done” to permanently delete your wallet.
Login to your Stargazer wallet
Click the 3 horizontal lines in the top right corner to access your settings
Select the wallet you want to rename
Select the ‘i’ next to the name
Type the new name in the top text field under ‘Name’