The question arising is whether this account by Papias really describes what we know as the Gospel of Mark.The Elder also said this, “Mark, being the interpreter of Peter, whatsoever he remembered he wrote accurately, but not however in the order that these things were spoken or done by our Lord. For he neither heard the Lord, nor followed him, but afterwards, as I said, he was with Peter, who did not make a complete [or ordered] account of the Lord’s logia, but constructed his teachings according to chreiai [concise self-contained teachings]. So Mark did nothing wrong in writing down single matters as he remembered them, for he gave special attention to one thing, of not passing by anything he heard, and not falsifying anything in these matters.”
A prior question is what was Eusebius's source for this Papias account? Who or what was Papias? When? Basic questions like nature and provenance of the reported source.