Martin Sheen – Ramón Antonio Gerardo Estévez
The actor adopted his stage name after claiming that people became suspicious of his birth name. He explained: "Whenever I would call for an appointment, whether it was a job or an apartment, and I would give my name, there was always that hesitation and when I'd get there, it was always gone. So I thought, I got enough problems trying to get an acting job, so I invented Martin Sheen.
It's still Estevez officially. I never changed it officially. I never will. It's on my driver's license and passport and everything. I started using Sheen, I thought I'd give it a try, and before I knew it, I started making a living with it and then it was too late. In fact, one of my great regrets is that I didn't keep my name as it was given to me. I knew it bothered my dad."