A name in the housing register (4)

I believe the answer is:

greg

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'a name' is the definition.
Both the answer and definition are singular nouns.
Maybe you can see an association between them that I don't see?

'in the housing register' is the wordplay.
'in' indicates a hidden word.
'GREG' can be found hidden inside 'housing register'.

Can you help me to learn more?

(Another definition for greg that I've seen is " Germans keep on this > man".)

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