Regarding Justin Martyr, this is what you left out:
<LI>150 AD Justin Martyr "But both Him, and the Son (who came forth from Him and taught us these things, and the host of the other good angels who follow and are made like to Him), and the prophetic Spirit, we worship and adore." (Justin Martyr, First Apology, ch 6) Notice what else Justin say: "Worship God alone." (Justin Martyr, First Apology, ch 16) "Whence to God alone we render worship." (Justin Martyr, First Apology, ch 17).
If you believe that God the Father is the only one we should worship, that is NOT what Justin Martyr says. He stated that we also worship and adore Jesus and the Holy Spirit along with the Father. Why? Because all three are one and the same.
Other Early Church Fathers supporting the Holy Trinity:
<LI>140 AD Aristides "[Christians] are they who, above every people of the Earth, have found the truth, for they acknowledge God, the creator and maker of all things, in the only-begotten Son and in the Holy Spirit" (Apology 16).
<LI>177 AD Athenagoras "The Son of God is the Word of the Father in thought and actuality. By him and through him all things were made, the Father and the Son being one. Since the Son is in the Father and the Father is in the Son by the unity and power of the Spirit, the Mind and Word of the Father is the Son of God. And if, in your exceedingly great wisdom, it occurs to you to inquire what is meant by `the Son,' I will tell you briefly: He is the first- begotten of the Father, not as having been produced, for from the beginning God had the Word in himself, God being eternal mind and eternally rational, but as coming forth to be the model and energizing force of all material things" (Plea for the Christians 10:2-4).
<LI>190 AD Clement Of Alexandria "I understand nothing else than the Holy Trinity to be meant; for the third is the Holy Spirit, and the Son is the second, by whom all things were made according to the will of the Father." (Stromata, Book V, ch. 14)