"It was written in Patmos about A.D.68, whither John had been banished by Domitius Nero, as stated in the title of the Syriac version of the Book; and with this concurs the express statement of Irenaeus (A.D.175), who says it happened in the reign of Domitianou, ie., Domitius (Nero). Sulpicius Severus, Orosius, &c., stupidly mistaking Domitianou for Domitianikos, supposed Irenaeus to refer to Domitian, A.D. 95, and most succeeding writers have fallen into the same blunder. The internal testimony is wholly in favor of the earlier date." (Concise Critical Comments on the Holy Bible, by Robert Young.”
In other words Young says it's a 'stupid mistake' by Sulpicius Severus and others that has resulted in A DOMINO EFFECT of bad information concerning the dating of Revelation down through the centuries.
Thank you, KyRedneck. I remember this one now. I also have a couple or three more quotes from the 1st century that pertain. I have to find where I saved them on my computer.
But the domino effect is very prominent here. In the minds of many today a, say, third century writer assumes greater testimonial validity than he should.