Did the Early Christians pray to saints?

Origen of Alexandria (c. 185 - c. 253)

We judge it improper to pray to those beings who themselves offer up prayers (to God), seeing even they themselves would prefer that we should send up our requests to the God to whom they pray, rather than send them downwards to themselves, or apportion our power of prayer between God and them." (Against Celsus, Book V, Chap. XI) 185-254

Irenaeus 130 - c. 202 AD

Nor does she perform anything by means of angelic invocations, or by incantations, or by any other wicked curious art; but, directing her prayers to the Lord, who made all things, in a pure, sincere, and straightforward spirit, and calling upon the name of our Lord Jesus Christ, she has been accustomed to work miracles for the advantage of mankind, and not to lead them into error. If, therefore, the name of our Lord Jesus Christ even now confers benefits [upon men], and cures thoroughly and effectively all who anywhere believe in Him, but not that of Simon, or Menander, or Carpocrates, or of any other man whatever, it is manifest that, when He was made man, He held fellowship with His own creation, and did all things truly through the power of God, according to the will of the Father of all, as the prophets had foretold. But what these things were, shall be described in dealing with the proofs to be found in the prophetical writings.

Against Heresies (Book II, Chapter 32)

Tertullian 155 AD - c. 220 AD

apology

On the Trinity