The Gospel according to Mark is often referred to as the Memoirs of Peter because it is believed to be based on the teachings of Peter, one of Jesus's disciples. Mark is said to have written down Peter's recollections of Jesus's life and ministry.

St. Peter was not the direct author of any Gospel.

However, scholars think that Peter worked with Mark to produce Mark's gospel. Mark was not an eye-witness of Jesus, whereas Peter was.

There is a so-called "Gospel of Peter", but it's not actually by Peter. Scholars generally agree that it was written in the 2nd half of the 2nd century, and is therefore pseudepigraphical (bearing the name of an author who did not actually compose the text - a fairly common and accepted practice in those days, not necessarily an attempt to deceive). It was rejected by the church fathers. For further info, see Wikipedia on 'Gospel of Peter'.

no body knows

because they thought that the gospel was for the Jews only

josh/ larry's stepfather