alias(another name; an assumed name) noun [UK: ˈeɪ.liəs] [US: ˈeɪ.liəs]
nickname [nicknames](familiar, invented given name) noun [UK: ˈnɪk.neɪm] [US: ˈnɪk.ˌnem]His nickname was Quijada or Quesada. = Su sobrenombre era Quijada o Quesada.
sobriquet [sobriquets](familiar name for a person) noun [UK: ˈsəʊ.brɪk.eɪ] [US: ˈsoʊ.brɪk.eɪ]