Crossword Genius

Oliver's college? (10)

Ross

I believe the answer is:

goldsmiths

I'm a little stuck... Click here to teach me more about this clue!

'oliver's college?' is the definition.
I can't judge whether this definition defines the answer.

'oliver's college?' is the wordplay.
'oliver' becomes 'goldsmith' (I've seen this before).
'college?' becomes 's' (I can't justify this - if you can you should give a lot more credence to this answer).
'goldsmith'+'s'='GOLDSMITHS'

Can you help me to learn more?

I've seen this clue in The Times.
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