The COMPOUND PERSONAL PRONOUNS are formed by adding self or selves to certain of the objective and possessive personal pronouns. Ex: herself, myself, itself, themselves, etc. They are used to add emphasis to an expression. Ex: I, MYSELF, did it. He, HIMSELF, said so. They are also used reflexively after verbs and prepositions. Ex: He mentioned HIMSELF, He did it for HIMSELF.
The compound personal pronouns should generally be confined to their emphatic and reflexive use. Do not say, MYSELF and John will come, but, John and I will come. Do not say, They invited John and MYSELF, but, They invited John and ME.
The compound personal pronouns have no possessive forms; but for the sake of emphasis own with the ordinary possessive form is used. Ex:I have my OWN book, Bring your OWN work, He has a home of his OWN.
There are no such forms as hisself, your'n, his'n, her'n, theirself, theirselves, their'n. In place of these use simply his, her, their, or your.