Changing your display name
From Georgetown University Commons Knowledge Base
Because Commons blogs authenticate through Georgetown's NetID system, your name will display as it is registered with Georgetown. You may prefer to change your first name from your formal name to a nickname, or you may want to display only your NetID, not your full name, on a group blog.
Change the way your name displays
Go to the dashboard of any of your blogs. Click on your name in the upper right. You can make changes to your first or last names there, as well as select your choice of options from the "display name publicly as" drop-down.