Another name for a noun that is replaced by a pronoun is “antecedent.” (The prefix antemeans “before,” indicating that the antecedent comes before the pronoun.) Pronouns and their antecedents must ...

Thus arises the rule, as stated above: "A relative pronoun agrees with its antecedent in number and gender, but not case; it derives its case from its use in its own clause." Click here for a ...