Anne was followed so well! (2,6)

I believe the answer is:

by george

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'well' is the definition.
(I know that well can be written as by George)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for by george that I've seen before include "the dragon was killed" , "planes might be flown thus?" , "Fancy that" , "Goodness" , "Dated expression of surprise" .)

I've seen this clue in The Independent.

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