Johno; Are you claiming that the gospels can be considered as different sources, independent of each other? And that historians agree with this view? EDIT: Let me put it another way. Guru Nanak Dev is attested by at least three independent sources, two of them complete biographies, written shortly after he died. In the region, at this time period, printing was unheard of, and books uncommon; however, copies of these sources became extremely widely disseminated within a relatively short timeframe. Ergo, Nanak Dev was a genuine prophet of the Godhead.