**and James was the head of the Council at Jerusalem in Acts 15.**
I believe that might be a non-Catholic belief. Peter did the speaking and was in charge of the Council of Jerusalem.
Verse 19 appears to be missing in your Bible, Salvation.
No one cares what a Catholic belief is as long as we have the bible to set things straight...
James also spoke as did Paul and Barnabas. James was the final speaker and made the final decision, not Peter. Read the chapter.
Acts 15:13-29 13 After they finished speaking, James replied, Brothers, listen to me. 14 Simeon has related how God first visited the Gentiles, to take from them a people for his name. 15 And with this the words of the prophets agree, just as it is written,
16 After this I will return, and I will rebuild the tent of David that has fallen; I will rebuild its ruins, and I will restore it, 17 that the remnant of mankind may seek the Lord, and all the Gentiles who are called by my name, says the Lord, who makes these things 18 known from of old.
19 Therefore my [that is James speaking] judgment is that we should not trouble those of the Gentiles who turn to God, 20 but should write to them to abstain from the things polluted by idols, and from sexual immorality, and from what has been strangled, and from blood. 21 For from ancient generations Moses has had in every city those who proclaim him, for he is read every Sabbath in the synagogues.
22 Then it seemed good to the apostles and the elders, with the whole church, to choose men from among them and send them to Antioch with Paul and Barnabas. They sent Judas called Barsabbas, and Silas, leading men among the brothers, 23 with the following letter: The brothers, both the apostles and the elders, to the brothers who are of the Gentiles in Antioch and Syria and Cilicia, greetings. 24 Since we have heard that some persons have gone out from us and troubled you with words, unsettling your minds, although we gave them no instructions, 25 it has seemed good to us, having come to one accord, to choose men and send them to you with our beloved Barnabas and Paul, 26 men who have risked their lives for the name of our Lord Jesus Christ. 27 We have therefore sent Judas and Silas, who themselves will tell you the same things by word of mouth. 28 For it has seemed good to the Holy Spirit and to us to lay on you no greater burden than these requirements: 29 that you abstain from what has been sacrificed to idols, and from blood, and from what has been strangled, and from sexual immorality. If you keep yourselves from these, you will do well. Farewell.
Peter was in charge of nothing. He spoke as did others named and unnamed. Nobody said ANYTHING about deferring to him nor did Scripture record him as being in charge.