Liberal Lord had a bit of luck - today's his day (5,4)

I believe the answer is:

roald dahl

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'today's his day' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'liberal lord had a bit of luck' is the wordplay.
'liberal' is an anagram indicator.
'bit of' says to take the initial letters.
The first letter of 'luck' is 'l'.
'lord'+'had'+'a'='lordhada'
'lordhada' with letters rearranged gives 'roalddah'.
'roalddah'+'l'='ROALD DAHL'

Can you help me to learn more?

(Other definitions for roald dahl that I've seen before include "author, resident in 21 [BUCKS] - with 13a" , "Children's author" , "he wrote" .)

I've seen this clue in The Independent.

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