8.93 referring to people

When you are referring to a person or group of people, you use 'who' as the subject of a non-defining clause.

• Heath Robinson, who died in 1944, was a graphic artist and cartoonist.
• The horse's rider, who has not been named, was too distressed to talk to police.

You use 'who' or 'whom' as the object of a non-defining clause.

• That's one of the things which Heath, who I do not like, had a clear idea about.
• He then became involved in a row with the party chairman, whom he accused of lying.