Allen and Greenough's New Latin Grammar, section 295

Heavy Construction

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Personal Pronouns.

295.

The Personal Pronouns have, in general, the same constructions as nouns.

a. The personal pronouns are not expressed as subjects, except for distinction or emphasis: -

té vocó, I call you. But, -
quis mé vocat? ego té vocó, who is calling me? I (emphatic) am calling you.

b. The personal pronouns have two forms for the genitive plural, that in -um being used partitively (§ 346), and that in -í oftenest objectively (§ 348): -

mâior vestrum, the elder of you.
habétis ducem memorem vestrí, oblítum suí (Cat. iv. 19), you have a leader who thinks (is mindful) of you and forgets (is forgetful of) himself.
pars nostrum, a part (i.e. some) of us.

NOTE 1: The genitives nostrum, vestrum, are occasionally used objectively (§ 348): as, - cupidus vestrum (Verr. iii. 224), fond of you; custós vestrum (Cat. iii. 29), the guardian of you (your guardian).

NOTE 2: ``One of themselves'' is expressed by únus ex suís or ipsís (rarely ex sé) or únus suórum.

c. The Latin has no personal pronouns of the third person except the reflexive sé. The want is supplied by a Demonstrative or Relative (§§ 296. 2, 308.f).