Story about Rome's beginning as capital of Italy some time ago (4)

I believe the answer is:

lire

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'capital of italy some time ago' is the definition.
I can't judge whether this defines the answer.

'story about rome's beginning' is the wordplay.
'story' becomes 'lie' (story can mean a fabrication).
'about' means one lot of letters goes inside another.
'beginning' suggests taking the first letters.
The initial letter of 'romes' is 'r'.
'lie' going around 'r' is 'LIRE'.

'as' is the link.

Can you help me to learn more?

I've seen this clue in The Guardian.

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