Internal Evidence
nLike Matthew, Mark is anonymous in its text, except for its title, Euaggelion kata Markon.
nSome have suggested the style fits PeterŐs personality:
nImpressionable rather than reflective
nEmotional rather than logical
nMany vivid details
nThe outline of Mark fits PeterŐs talk at CorneliusŐ house.
nThe narrative standpoint is consistent with PeterŐs authorship.
nMark 14:51 makes best sense as a sketch of Mark himself.