In the only codices which would be even likely to preserve an older reading, namely the Sinaitic Syriac and the oldest Latin Manuscript, the pages are GONE which contained the end of Matthew 28. Frederick Cornwallis Conybeare (1856 - 9 January 1924) Professor of Theology at the University of Oxford.
Here is the oldest recorded document of Matthew 28:19.
"The Demonstratio Evangelica" by Eusebius:
Eusebius of Caesarea. 265 ? AD.– 337 ? AD.
Eusebius was the Church historian and Bishop of Caesarea. On page 152 Eusebius quotes the early book of Matthew that he had in his library in Caesarea. Eusebius informs us of Yahshua's actual words to his disciples in the original text of Matthew 28:19.
"With one word and voice He said to His disciples: "Go, and make disciples of all nations in My Name, teaching them to observe all...
And again Eusebius for example, in Book III of his History, Chapter 5, Section 2, which is about the Jewish persecution of early Christians, we read:
"But the rest of the disciples, who had been incessantly plotted against with a view to their destruction, and had been driven out of the land of Judea, went to all nations to preach the good news, relying upon the power of Christ, who had said to them, "Go ye and make disciples of all the nations in my name."
And again, in his Oration in Praise of Emperor Constantine, Chapter 16, Section 8, we read:
"What king or prince in any age of the world, what philosopher, legislator or prophet, in civilized or barbarous lands, has attained so great a height of excellence, I say not after death, but while living still, and full of mighty power, as to fill the ears and tongues of all mankind with the praises of his name?
Surely none save our only Savior has done this, when, after his victory over death, he spoke these words to his followers, and fulfilled it by that event, saying to them, "Go ye and make disciples of all nations in my name."