At numerous points in the series characters are known under a different name. Some of these aliases are self imposed to hide their true identity for safety or just anonymity. Others have names forced on them as damane names.
The Forsaken are also known under aliases as they take control of nations or work in the background on plots. They have left their old names behind so these cannot be considered aliases. Also, should they die of anything other than balefire they can be gifted a new body by the Dark One and he names them anew.
Corlan Dashiva, Osan'gar
High Lord Samon
Cyndane, Keille Shaogi, Selene, Sylvie