Until 1983, when a software developer Alan Cooper pioneered the concept of customer persona, the word “persona” had been used in entertainment magazines to compare a celebrity whose public persona was bright and bubbly to one of being quiet and reclusive in private. Its antonym was “persona non grata” which referred to someone not being welcome or acceptable at certain venues.
Persona: Guide and History of Persona Marketing

Until 1983, when a software developer Alan Cooper pioneered the concept of customer persona, the word “persona” had been used in entertainment magazines to compare a celebrity whose public persona was bright and bubbly to one of being quiet and reclusive in private. Its antonym was “persona non grata” which referred to someone not being welcome or acceptable at certain venues.