Conversation so far:
What does the names and etymologies have to do with Saint Peter?
Peter's original name, as indicated in the New Testament, was Simon or Simeon.
What names did Saint Peter use more?
He was later given the name Peter (156 occurances in the New Testament).
What does Peter mean?
The precise meaning of the Aramaic word is disputed, some saying that its usual meaning is rock or crag

Question: what about the etymologies?
Self-contained rewrite: What about the meaning of the etymologies of Saint Peter?