King of Persia the other king raised (6)

I believe the answer is:

xerxes

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'king of persia' is the definition.
'xerxes' can be an answer for 'king' (I have seen 'Persian king' mean 'xerxes' so perhaps 'king' could also mean 'xerxes'). I am not sure about the 'of persia' bit.

'the other king raised' is the wordplay.
'the other' becomes 'sex' (old-fashioned slang term).
'king' becomes 'rex' ('king' in Latin).
'raised' is a reversal indicator (going up in a down clue).
'sex'+'rex'='sexrex'
'sexrex' back-to-front is 'XERXES'.

Can you help me to learn more?

(Other definitions for xerxes that I've seen before include "Ancient Persian king" , "Name of two Persian kings" , "One old king" , "King of Persia, 486-465 BC" , "Name of ancient Persian kings" .)

I've seen this clue in The Independent.

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