The pronoun who, in English, is an interrogative pronoun and a relative pronoun, used chiefly to refer to humans.
Its derived forms include whom, an objective form the use of which is now generally confined to formal English; the possessive form whose; and the emphatic form whoever (also whosoever and whom(so)ever; see also -ever).
obsolete spelling of whom
What person or people; which person or people, as the object of a verb.
“Whom did you ask?”
What person or people; which person or people, as the object of a preposition.
“To whom are you referring?”
“With whom were you talking?”
Him; her; them (used as a relative pronoun to refer to a previously mentioned person or people.)
“He’s a person with whom I work.;”
“We have ten employees, half of whom are carpenters.”
used instead of ‘who’ as the object of a verb or preposition
“her mother, in whom she confided, said it wasn’t easy for her”
“whom did he marry?”