Gospel of Peter to be the work of the Apostle Peter: However, scholars generally agree that Gospel of Peter is pseudepigraphical (bearing the name of an author who did not actually compose the text). The true author of the gospel remains a mystery. Although there are parallels with the three Synoptic Gospels, Peter does not use any of the material unique to Matthew or unique to Luke. Raymond E. Brown and others find that the author may have been acquainted with the synoptic gospels and even with the Gospel of John; Brown ("The Death of the Messiah") even suggests that the author's source
Hebrew Gospel hypothesis (1915) in its article "Gospel of the Hebrews" noted that Nicholson cannot be said ...[to] have carried conviction to the minds of New Testament scholars." Rudolf Handmann (1888) proposed an Aramaic Gospel of the Hebrews but reasoned that this was not the Hebrew Matthew and there never was a Hebrew Ur-Matthew. James R. Edwards, in "The Hebrew Gospel and the development of the synoptic tradition" (2009), suggested that a lost Hebrew Ur-Matthew is the common source of both the Jewish-Christian Gospels and the unique L source material (material not sourced from Mark or Q) in the Gospel of Luke. A