luis109g,
As a rule of thumb when reading the four gospels, is that each one has a bit more (or less) information than the other. Here is an example:
This is an account of the exact same event. Only one account offers more information than the others. See if you can spot it:
Matthew 26:51 And, behold, one of them which were with Jesus stretched out his hand, and drew his sword, and struck a servant of the high priest's, and smote off his ear.
Mark 14:47 And one of them that stood by drew a sword, and smote a servant of the high priest, and cut off his ear.
Luke 22:50 And one of them smote the servant of the high priest, and cut off his right ear.
John 18:10 Then Simon Peter having a sword drew it, and smote the high priest's servant, and cut off his right ear. The servant's name was Malchus.
You are correct, it was John that lists the name of the servant who's ear was smote off, AND lists the name of the person that had drew the sword.
Here is one more example: Luke 22:61 mentions that the Lord looked upon Peter. The other books do not mention this fact. Let's read the exact same event unfolds:
Matthew 26:73 And after a while came unto him they that stood by, and said to Peter, Surely thou also art one of them; for thy speech bewrayeth thee.
[74] Then began he to curse and to swear, saying, I know not the man. And immediately the cock crew.
[75] And Peter remembered the word of Jesus, which said unto him, Before the cock crow, thou shalt deny me thrice. And he went out, and wept bitterly.
Mark 14:71 But he began to curse and to swear, saying, I know not this man of whom ye speak.
[72] And the second time the cock crew. And Peter called to mind the word that Jesus said unto him, Before the cock crow twice, thou shalt deny me thrice. And when he thought thereon, he wept.
Luke 22:60 And Peter said, Man, I know not what thou sayest. And immediately, while he yet spake, the cock crew.
[61] And the Lord turned, and looked upon Peter. And Peter remembered the word of the Lord, how he had said unto him, Before the cock crow, thou shalt deny me thrice.
John 18:25 And Simon Peter stood and warmed himself. They said therefore unto him, Art not thou also one of his disciples? He denied it, and said, I am not.
[26] One of the servants of the high priest, being his kinsman whose ear Peter cut off, saith, Did not I see thee in the garden with him?
[27] Peter then denied again: and immediately the cock crew.
We have observed that the other scripture did not mention these facts, but where it is not mentioned does not mean that it did not happen.