peter betrayed jesus
It was Peter. Peter knew who Jesus was, the Son of God.
I Knew Jesus - Before He Was a Star - was created in 1974.
Simon Peter was a disciple of Jesus and three times he denied that he knew Jesus. (Matthew 26.34.)
It would depend upon your question. In the Book of Mark, Chapter 8, when Jesus says to His disciples, "Who do you say that I am?" Peter answers, "Thou art the Christ" (Mark 8:29). When Peter said to Jesus, "I shall never deny you Master." Jesus, told Peter, "Before the cock crows twice, you will deny me three times." This was during the Last Supper. Before the cock crowed twice, on the day of the Crucifixion, Peter denied three times that he knew Jesus. Peter later wept in repentance (Mark 14:72).
The last supper came after Jesus knew He was going to be crucified. Jesus, being God, always knew what form His death would take.
I suppose one of the big things about it is that Jesus knew that Peter would deny that he even knew Him (not even just one, but three times), and Jesus still loved Peter enough to make Peter the rock of the church.
When Jesus asked Peter "'YOU, though, who do YOU say I am?'"Peter answered, 'You are the Messiah, the Son of the living God.'"(Matthew 16:15+16)
Peter was a fisherman before he met Jesus
The office of Pope was not formally established until decades after the crucifixion. However tradition has it that Peter became the first Pope, so yes he knew Jesus before the crucifixion, but he was not yet Pope then. He specifically and emphantically denied knowing Jesus during the crucifixion!
Jesus was betrayed by Peter, one of the twelve disciples, when Jesus was taken away to be crucified. Peter betrayed Jesus three times and then the rooster crowed. Jesus before this said that peter was going to betray him and when Peter realized this he ran and cried.
Peter denied Jesus because he was afraid if the crowd, who wanted to kill Jesus, knew he was one of Jesus' disciples. They would want to kill him as well. Overall, he was afraid of prison and death.
I believe it was Peter