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Although I tend to agree that Barrington is possibly not a distinct suburb it is not a misnomer for Spreydon and as such is better described as a locality. Barrington is well known as an area around Barrington St near Barrington Park. The shopping Mall bears its name and it is used by the city bus service. Areas of Spreydon further away are not called Barrington, such as along Lyttelton St or the Sydenham end of Milton St. The references and citations given on this page confirm the origin of the name Barrington over 100 years ago in the early days of the city. Other areas of the old clearly defined (see map) Spreydon borough also have developed names of their own and are now regarded as distinct suburbs of their own. Somerfield for example does not seem to have been formally created but got its name from a farm within the southern part of the old borough of Spreydon. Roger 8 Roger (talk) 20:00, 20 March 2016 (UTC)[reply]
The issue with suburbs in Christchurch is a vexed one, as there is nothing official about them, and no formal boundaries exist; this is in stark contrast with Wellington, for example. Whether a suburb or not, Roger 8 Roger's approach of calling it a locality is a good one, because it would appear to meet notability criteria regardless of its status. What is certainly inappropriate is to simply redirect the article, and not at the same time merge the content with the target article. I regard the deletion of well-referenced content as disruptive editing. Schwede6621:34, 20 March 2016 (UTC)[reply]
@Pepperbeast: What you posted and then self-reverted here earlier today are not "Christchurch suburb boundaries as published by the Christchurch City Council", but area units used by Statistics New Zealand for use in the census. The irony is, of course, that there are area units called Barrington North and Barrington South; thanks for finding this little gem! Schwede6623:23, 20 March 2016 (UTC)[reply]