A holy play brought in to stir up Windsor? (5,5)

I believe the answer is:

royal house

'windsor?' is the definition.
(windsor is a kind of royal house)

'a holy play brought in to stir up' is the wordplay.
'play' is an anagram indicator.
'brought in' indicates putting letters inside.
'to stir up' becomes 'rouse' (I've seen this before).
'a'+'holy'='aholy'
'aholy' with letters rearranged gives 'oyalh'.
'oyalh' going inside 'rouse' is 'ROYAL HOUSE'.

I've seen this clue in The Guardian.

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