Of course not, as trinitarianism is taught in the New Testament.... but, the full-orbed formulary describing (or really apprehending) God as Trinity, 3 distinct Persons, with one essence, worked out from the scriptures, had to await for Athanasius and Nicea (AD 325)(something all cults always seem to condemn)...even though the prevailing view in the Church, arguably, throughout the 4th Century was Arianism...
Both the nature of the Trinity and the nature of Jesus, one Person with two full natures(divine & human), took until the 4th Century and beyond to be apprehended, described, and accepted. This is not to say that the saints listed were not incredible Christians, however, in the patristic period orthodoxy took some time to develop.
My main point was though, while the early Fathers got many things right, they got other things wrong--and proving they had an eschatology of literal Millenniumism doesn't prove at all that they were correct.
If I told you that you are existing in three states simultaneously, would you believe me? [You are, BTW.] ... How is the Trinity reality of God any more difficult to comprehend? A scientific explanation of thr three states of existence happening simultaneously would not have been possible until within the past fifty years! That early believers whom we late comer Christians will meet where/when lost no sleep over the nature of God in Three persons—Blessed Trinity seems to dismiss arguing over the issue as if salvation depended upon it.