You can change the display name of your WordPress account which show on a WordPress post or comments without changing your wordpress username.
1. Login to your WordPress admin dashboard.
2. Under the dashboard menu, hover your mouse over "
Users" and then click on "
Your Profile".
3. Locate "
Nickname" and enter your new name.
4. In the option "
Display name publicly as", choose your newly added nickname from the drop-down menu.
