Webster's Revised Unabridged Dictionary · 1913

Ourselves

Ourselves , pronoun

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
Unless we would denude ourself of all force. — Clarendon

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