1.5 personal and demonstrative pronouns
You may decide not to name the person or thing and use a pronoun rather than a proper noun or common noun.
You usually do this because the person or thing has already been named, so you refer to them by using a personal pronoun or a demonstrative pronoun.
See paragraphs 1.96 to 1.109 for more information about personal pronouns, and paragraphs 1.123 to 1.126 for more information about demonstrative pronouns.