Silver brought to a king by Chinese leader (3,4)

I believe the answer is:

aga khan

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'leader' is the definition.
Both the answer and definition are singular nouns.
Maybe there's an association between them I don't understand?

'silver brought to a king by chinese' is the wordplay.
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'brought to' means one lot of letters go next to another.
'king' becomes 'K' (abbreviation for king in chess).
'by' means one lot of letters go next to another.
'chinese' becomes 'han' (Chinese dynasty).
'ag'+'a'+'k'+'han'='AGA KHAN'

Can you help me to learn more?

I've seen this clue in The Independent.

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