You are required to register on Facebook ny entering all your information like name and other details. It is not permanent though, you have the option of changing the name and other details which are displayed on your profile. Let’s see how to change name on Facebook.
Steps for how to change your name on Facebook:
• Click on the top right corner of Facebook.
• Click on settings under privacy and settings.
• Now, click on personal and account information.
• Click on your name.
• Enter the new name you want to be displayed on your profile and review change.
• Enter you password and click on save changes.

Read more: how do i change the name of my business page on facebook