Millionaire briefly plying rich man with lagers (7,6)

I believe the answer is:

charles ingram

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'millionaire briefly plying rich' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'man with lagers' is the wordplay.
I cannot quite understand how this works, but
'man' could be 'charles' and 'charles' is present in the answer.
The remaining letters 'ingram' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Guardian.

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