Romanov stars, possibly?

I believe the answer is:

tsars

I'm a little stuck... Click here to teach me more about this clue!

'romanov stars possibly?' is the definition.
I can't judge whether this defines the answer.

'stars possibly?' is the wordplay.
'possibly?' indicates anagramming the letters (I've seen 'possibly' mean this).
'stars' is an anagram of 'TSARS'.

Can you help me to learn more?

(Other definitions for tsars that I've seen before include "Old Russian rulers" , "Russian emperors" , "Old monarchs" , "Old Russia's rulers" .)

I've seen this clue in the Evening Standard.

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