'Himself' definitions:

Definition of 'Himself'

From: GCIDE

Himself \Him*self"\, Himselve \Him*selve"\, Himselven \Him*selv"en\ (?), pron. pl. Themselves. See Hemself. [Obs.] --Chaucer. [1913 Webster]

From: GCIDE

Himself \Him*self"\, pron.
1. An emphasized form of the third person masculine pronoun; -- used as a subject usually with he; as, he himself will bear the blame; used alone in the predicate, either in the nominative or objective case; as, it is himself who saved himself. [1913 Webster]
But he himself returned from the quarries. --Judges iii. 19. [1913 Webster]
David hid himself in the field. --1 Sam. xx. 24. [1913 Webster]
The Lord himself shall give you a sign. --Is. vii. 14. [1913 Webster]
Who gave himself for us, that he might . . . purify unto himself a peculiar people. --Titus ii. 14. [1913 Webster]
With shame remembers, while himself was one Of the same herd, himself the same had done. --Denham. [1913 Webster]
Note: Himself was formerly used instead of itself. See Note under Him. [1913 Webster]
It comprehendeth in himself all good. --Chaucer. [1913 Webster]
2. One's true or real character; one's natural temper and disposition; the state of being in one's right or sane mind (after unconsciousness, passion, delirium, or abasement); as, the man has come to himself. [1913 Webster]
By himself, alone; unaccompanied; apart; sequestered; as, he sits or studies by himself.
To leave one to himself, to withdraw from him; to let him take his own course. Himselve Himself