Until he had to testify under oath.
Future Commander in Chief and President of the United States.
Nuts.
"Barron (also spelled “Baron” in some press accounts) appears to have been Trump’s go-to alias when he was under scrutiny, in need of a tough front man or otherwise wanting to convey a message without attaching his own name to it.
Trump’s use of an assumed name runs counter to the persona he has crafted as the leading Republican candidate for president - one of an unfiltered, politically incorrect maverick who is unafraid to say anything. It suggests that the billionaire real estate mogul is - or, at least, was - not so bold as he likes to present himself."
"Trump might have gotten away with his ruse even longer if not for a lawsuit in which he testified, under oath in 1990, that “I believe on occasion I used that name.”"
When this loon hits the general election he's doomed. But the Trump Cult aren't hearing it.
https://www.washingtonpost.com/news/the-fix/wp/2016/03/21/the-amazing-story-of-donald-trumps-old-spokesman-john-barron-who-was-actually-donald-trump-himself/