Colin has changed his name (8)

I believe the answer is:

nicholas

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'his name' is the definition.
The definition suggests a singular noun which matches the answer.

'colin has changed' is the wordplay.
'changed' indicates anagramming the letters.
'colin'+'has'='colinhas'
'colinhas' is an anagram of 'NICHOLAS'.

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(Other definitions for nicholas that I've seen before include "Russia's last emperor ..." , "Novel featuring Dotheboys Hall" , "Saint associated with Christmas figure" , "Boy" , "Former Russian leader" .)

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

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