Cameo Appearances of the Evangelists?

Interesting. William Baird notes in his History of New Testament Research that the nineteenth-century commentator Frédéric Louis Godet, who embraced traditional authorship for each of the four gospels, understood the unnamed disciple on the road to Emmaus in Luke 24 to have been Luke himself. “This leads him to suppose that each evangelist has carved in his narrative a small niche for himself: Matthew as the converted tax collector (Matt. 9:9); Mark as the young man who fled naked from Gethsemane (Mark 14:51-52); Luke as the Emmaus pilgrim (Luke 24:13); and John as the beloved disciple (John 13:23; 20:2).” (1:374)