Formerly, in India, a form of 'bwana'? (5)

I believe the answer is:

nawab

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'formerly in india' is the definition.
The definition suggests a singular noun which matches the answer.

'a form of 'bwana'?' is the wordplay.
'a form of' is an anagram indicator (the letters need to be in another 'form').
'bwana' anagrammed gives 'NAWAB'.

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(Other definitions for nawab that I've seen before include "Native governor in India; bwana (anag.)" , "Governor in Mogul empire" , "Indian governor" , "Indian ruler" , "Old governor" .)

I've seen this clue in the Evening Standard.

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