Eleven run Plantagenet stronghold (7)

I believe the answer is:

rangers

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'eleven run plantagenet stronghold' is the definition.
I can't judge whether this defines the answer.

'run plantagenet stronghold' is the wordplay.
'run' becomes 'range' (synonyms).
'plantagenet stronghold' becomes 'rs' (I can't justify this - if you can you should give a lot more credence to this answer).
'range'+'rs'='RANGERS'

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(Other definitions for rangers that I've seen before include "Park officials - Glasgow FC" , "Texas police - Glasgow FC" , "Glasgow football club" , "SECOND PART OF 6" , "footballers" .)

I've seen this clue in The Times.

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