8 GCA § 60.20: Identity of Defendant.

When the defendant is arraigned, he shall be informed that if the name by which he is prosecuted is not his true name, he shall declare his true name, or be proceeded against by the name in the indictment, information or complaint. If he gives no other name, the court may proceed accordingly; but if he alleges that another name is his true name, the court shall direct an entry thereof in the minutes of the arraignment, and the subsequent proceedings may be had against him by that name, referring also to the name by which he was first charged therein.