In wikipedia, the principal representation for alternative names for 
entities are 'redirects'. The redirect from "Catherine Sefton" to 
"Martin Waddell" can be found at 
https://en.wikipedia.org/w/index.php?title=Catherine_Sefton&redirect=no 
(and yes, being a wiki it's editable).

That redirect is annotated that this is a  redirect "From an alternative 
name" (as opposed to a common spelling mistake or something else) and 
"From a printworthy page title" (which says to use this redirect when 
building (cross-) indexes etc.).

To create a link from the "Catherine Sefton" to an authority control 
system (as distinct from the "Martin Waddell" link), the redirect can be 
editted include an Authority control template (see 
https://en.wikipedia.org/wiki/Template:Authority_control ), which is the 
same template used for full articles.

cheers
stuart



On 06/19/2014 08:53 PM, Owen Stephens wrote:
> An aside but interesting to see how some of this identity stuff seems to be playing out in the wild now. Google for Catherine Sefton:
>
> https://www.google.co.uk/search?q=catherine+sefton
>
> The Knowledge Graph displays information about Martin Waddell. Catherine Sefton is a pseudonym of Martin Waddell. It is impossible to know, but the most likely source of this knowledge is Wikipedia which includes the ISNI for Catherine Sefton in the Wikipeda page for Martin Waddell (http://en.wikipedia.org/wiki/Martin_Waddell) (although oddly not the ISNI for Martin Waddell under his own name).
>
> Owen
>
> Owen Stephens
> Owen Stephens Consulting
> Web: http://www.ostephens.com
> Email: [log in to unmask]
> Telephone: 0121 288 6936
>
> On 18 Jun 2014, at 23:28, Stuart Yeates <[log in to unmask]> wrote:
>
>> My reading of that suggests that http://isni-url.oclc.nl/isni/0000000122816316 shouldn't have both "Bell, Currer" and "Brontë, Charlotte", which it clearly does...
>>
>> Is this is a case of one of our sources of truth doesn't distinguish betweens identities and entities and we're allowing it to pollute our data?
>>
>> If that source of truth is wikipedia, we can fix that.
>>
>> cheers
>> stuart
>>
>> On 06/19/2014 12:11 AM, Richard Wallis wrote:
>>> Hi all,
>>>
>>> Seeing this thread I checked with the ISNI team and got the following
>>> answer from Janifer Gatenby who asked me to post it on her behalf:
>>>
>>> SNI identifies “public identities”.    The scope as stated in the standard
>>> is
>>>
>>>
>>>
>>> “This International Standard specifies the International Standard name
>>> identif*i*er (ISNI) for the identification of public identities of parties;
>>> that is, the identities used publicly by parties involved throughout the
>>> media content industries in the creation, production, management, and
>>> content distribution chains.”
>>>
>>>
>>>
>>> The relevant definitions are:
>>>
>>>
>>>
>>> *3.1*
>>>
>>> *party*
>>>
>>> natural person or legal person, whether or not incorporated, or a group of
>>> either
>>>
>>> *3.3*
>>>
>>> *public identity*
>>>
>>> Identity of a *party *(3.1) or a fictional character that is or was
>>> presented to the public
>>>
>>> *3.4*
>>>
>>> *name*
>>>
>>> character string by which a *public identity *(3.3) is or was commonly
>>> referenced
>>>
>>>
>>>
>>> A party may have multiple public identities and a public identity may have
>>> multiple names (e.g. pseudonyms)
>>>
>>>
>>>
>>> ISNI data is available as linked data.  There are currently 8 million ISNIs
>>> assigned and 16 million links.
>>>
>>>
>>>
>>> Example:
>>>
>>>
>>>
>>> [image: <image001.png>]
>>>
>>> ~Richard.
>>>
>>>
>>> On 16 June 2014 10:54, Ben Companjen <[log in to unmask]> wrote:
>>>
>>>> Hi Stuart,
>>>>
>>>> I don't have a copy of the official standard, but from the documents on
>>>> the ISNI website I remember that there are name variations and 'public
>>>> identities' (as the lemma on Wikipedia also uses). I'm not sure where the
>>>> borderline is or who decides when different names are different identities.
>>>>
>>>> If it were up to me: pseudonyms are definitely different public
>>>> identities, name changes after marriage probably not, name change after
>>>> gender change could mean a different public identity. Different public
>>>> identities get different ISNIs; the ISNI organisation says the ISNI system
>>>> can keep track of connected public identities.
>>>>
>>>> Discussions about name variations or aliases are not new, of course. I
>>>> remember the discussions about 'aliases' vs 'Artist Name Variations' that
>>>> are/were happening on Discogs.com, e.g. 'is J Dilla an alias or a ANV of
>>>> Jay Dee?' It appears the users on Discogs finally went with aliases, but
>>>> VIAF put the names/identities together: http://viaf.org/viaf/32244000 -
>>>> and there is no ISNI (yet).
>>>>
>>>> It gets more confusing when you look at Washington Irving who had several
>>>> pseudonyms: they are just listed under one ISNI. Maybe because he is dead,
>>>> or because all other databases already know and connected the pseudonyms
>>>> to the birth name? (I just sent a comment asking about the record at
>>>> http://isni.org/isni/0000000121370797 )
>>>>
>>>>
>>>> [Here goes the reference list…]
>>>>
>>>> Hope this helps :)
>>>>
>>>> Groeten van Ben
>>>>
>>>> On 15-06-14 23:11, "Stuart Yeates" <[log in to unmask]> wrote:
>>>>
>>>>> Could someone with access to the official text of ISO 27729:2012 tell me
>>>>> whether an ISNI is a name identifier or an entity identifier? That is,
>>>>> if someone changes their name (adopts a pseudonym, changes their name by
>>>>> to marriage, transitions gender, etc), should they be assigned a new
>>>>> identifier?
>>>>>
>>>>> If the answer is 'No' why is this called a 'name identifier'?
>>>>>
>>>>> Ideally someone with access to the official text would update the
>>>>> article at
>>>>> https://en.wikipedia.org/wiki/International_Standard_Name_Identifier
>>>>> With a brief quote referenced to the standard with a page number.
>>>>>
>>>>> [The context of this is ORCID, which is being touted as an entity
>>>>> identifier, while not being clear on whether it's a name or entity
>>>>> identifier.]
>>>>>
>>>>> cheers
>>>>> stuart
>>>>
>>>
>>>
>>>
>