I believe scripture alone. Peter may be the head of your church, but my church is based on Eph 2:20-22, Jesus Christ is the head of my church. Ralph
Ralph, Jesus is the head of the Catholic church. the church is the body of Christ. There are several roles in the body of Christ:
St Paul said this about it in 1corinthians 12:27-31
27Now you are Christ’s body, and individually parts of it.
28 Some people God has designated in the church to be, first, apostles; second, prophets; third, teachers; then, mighty deeds; then, gifts of healing, assistance, administration, and varieties of tongues.
29 Are all apostles? Are all prophets? Are all teachers? Do all work mighty deeds?
30 Do all have gifts of healing? Do all speak in tongues? Do all interpret?
31 Strive eagerly for the greatest spiritual gifts. But I shall show you a still more excellent way
Now, the fact is, the body of Christ has leaders and those leaders were meant to serve the others. As you well know, St. Peter was identified by Christ to be the ultimate leader of his church. This is clear from Matthew 16: 16-19
16Simon Peter said in reply, “You are the Messiah, the Son of the living God.”
17 Jesus said to him in reply, "Blessed are you, Simon son of Jonah. For flesh and blood has not revealed this to you, but my heavenly Father.
18 And so I say to you, you are Peter, and upon this rock I will build my church, and the gates of the netherworld shall not prevail against it.
19I will give you the keys to the kingdom of heaven. Whatever you bind on earth shall be bound in heaven; and whatever you loose on earth shall be loosed in heaven
This was reiterated in the discussion in Luke 22: 24-31 that discussed which disciple was the greatest:
24 Then an argument broke out among them about which of them should be regarded as the greatest.
25 He said to them, "The kings of the Gentiles lord it over them and those in authority over them are addressed as ‘Benefactors’;
26 but among you it shall not be so. Rather, let the greatest among you be as the youngest, and the leader as the servant.
27 For who is greater: the one seated at table or the one who serves? Is it not the one seated at table? I am among you as the one who serves.
28 It is you who have stood by me in my trials;
29 and I confer a kingdom on you, just as my Father has conferred one on me,
30 that you may eat and drink at my table in my kingdom; and you will sit on thrones judging the twelve tribes of Israel.
31 "Simon, Simon, behold Satan has demanded to sift all of you like wheat,
32 but I have prayed that your own faith may not fail; and once you have turned back, you must strengthen your brothers
Notice it is Peter that he identifies as the one to strengthen his brothers, after describing what it takes to be a leader.
Finally in John 21:15-21 Jesus also tells Peter to " Feed his sheep"
15 When they had finished breakfast, Jesus said to Simon Peter, “Simon, son of John, do you love me more than these?” He said to him, “Yes, Lord, you know that I love you.” He said to him, “Feed my lambs.”
16 He then said to him a second time, “Simon, son of John, do you love me?” He said to him, “Yes, Lord, you know that I love you.” He said to him, “Tend my sheep.”
17 He said to him the third time, “Simon, son of John, do you love me?” Peter was distressed that he had said to him a third time, “Do you love me?” and he said to him, “Lord, you know everything; you know that I love you.” (Jesus) said to him, “Feed my sheep.
18 Amen, amen, I say to you, when you were younger, you used to dress yourself and go where you wanted; but when you grow old, you will stretch out your hands, and someone else will dress you and lead you where you do not want to go.”
19 He said this signifying by what kind of death he would glorify God. And when he had said this, he said to him, “Follow me.”
So Ralph, How can you deny that Jesus defined Peter as the leader of his church. He clearly did in all these gospel accounts . This does not take away form Jesus being the head of the Church. He merely appointed Peter to administer it for him.