Inform William (4)

I believe the answer is:

tell

I believe this is a double definition.

'inform' is the first definition.
(I know that tell is a more specific form of the action inform)

'william' is the second definition.
(I've seen this in another clue)

(Other definitions for tell that I've seen before include "One who refused to accept tyranny" , "Apprise" , "Relate; Swiss hero" , "Rossini composed opera 'William ....'" , "William . . . . was a legendary Swiss archer" .)

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

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