Augustine of Hippo

But if any one thinks this lowers the historian's credit, first let him know that not all the copies of the Gospels have the name Hieremias, but some simply by the Prophet. But I do not like this defence, because the more, and the more ancient, copies have Hieremias, and there could be no reason for adding the name, and thus making an error. But its erasure is well accounted for by the hardihood of ignorance having heard the foregoing objection urged. …

Catena Aurea by Aquinas ↗

Jerome

Then was fulfilled what was spoken by the prophet Jeremiah, saying, 'And they took the thirty pieces of silver, the value of Him who was priced, whom they of the children of Israel priced, and gave them for the potter's field, as the Lord directed me.' This testimony is not found in Jeremiah. But in Zechariah, who is almost the last of the twelve prophets, a certain similarity is mentioned (Zech. 11). And although the meaning does not differ much, nevertheless both the order and the words are different. …

Commentary on Matthew ↗

Thomas Aquinas

Then he confirms it from authority: "then was fulfilled that which was spoken by Jeremias the prophet." But there is a question: why does he say "by Jeremias the prophet saying," because the words, as they stand there, are not written in all of Sacred Scripture. Yet something similar is found at Zechariah 11:12: "they weighed my wages, thirty pieces of silver." There is therefore a question why it is attributed to Jeremias, when it was said by Zechariah. …

Commentary on Matthew ↗