I learned that Akon real name is Alione Badara Thiam.
Akons real name is Alioune Badara Thiam, Akon is just his acting/stage name.
Doris Day, is the assumed name
(pseudonyms) of the actress/singer; real name - Doris Mary Ann Von Kappelhoff. The story of her name is a bit long, but interesting. You might want to read about it, so I leave the link:https://books.google.com.br/books?id=eS ... RY&f=false
It´s interesting the word pseudonym
itself (aka pen name), an alternative (pseudo/false) name.
While at it, orthonym
- the real name of someone or something, opposite to a pseudonym. Generally we say "real name".