With a real last name of “Lardner” it’s easy to guess why my stage/public name is Mark Adam. My official name of Mark Adam Lardner is harder to search online for and harder for people to spell. You should see some of the ways I’ve seen Lardner spelled. “Larander,” “Lakner,” “Lander,” and so many other really bad versions. As a result, I dropped the “Lardner” bit and just go with Mark Adam.
So there you have it. If you ever wondered, now you know.