Douglas Carroll? Some old Asian seaman? (6)

I believe the answer is:

lascar

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'old asian seaman?' is the definition.
'lascar' can be an answer for 'seaman?' (I've seen this before). I am not certain of the 'old asian' bit.

'douglas carroll? some' is the wordplay.
'some' indicates a hidden word.
'LASCAR' is hidden in the letters of 'douglas carroll'.

Can you help me to learn more?

(Other definitions for lascar that I've seen before include "E. Indian seaman" , "Eastern sailor" , "The East Indian sailor is a rascal" , "Rascal (anag) - oriental seaman" , "Camp-follower" .)

I've seen this clue in the Sydney Morning Herald.

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