There are quite a large number of forgeries we have that date to the classical or early medieval era, that are recognized as important works of their own. http

There are quite a large number of forgeries we have that date to the classical or early medieval era, that are recognized as important works of their own. https://en.wikipedia.org/wiki/Pseudo-Dionysius_the_Areopagite https://en.wikipedia.org/wiki/Pseudo-Dionysius_the_Areopagit... for example.