Source : Webster's Revised Unabridged Dictionary (1913)

Myself \My*self"\, pron.; pl. {Ourselves}.
   I or me in person; -- used for emphasis, my own self or
   person; as I myself will do it; I have done it myself; --
   used also instead of me, as the object of the first person of
   a reflexive verb, without emphasis; as, I will defend myself.

Ourselves \Our*selves"\, pron.
;  sing. {Ourself} (?). An emphasized form of the pronoun of the
   first person plural; -- used as a subject, usually with we;
   also, alone in the predicate, in the nominative or the
   objective case.

         We ourselves might distinctly number in words a great
         deal further then we usually do.         --Locke.

         Safe in ourselves, while on ourselves we stand.
                                                  --Dryden.

   Note: The form ourself is usec only in the regal or formal
         style after we or us, denoting a single person.

               Unless we would denude ourself of all force.
                                                  --Clarendon.