There's a few things that I should cover here before I lock the thread and ask that you bring the matter to the moderators in PM rather than on the public site for people to see.
On the Guild we do not delete accounts. They are added to the database upon creation and we do not have the permissions or privileges to that database to remove any content. All content that is removed from the site is either removed from visibility or from indexing so that we can if needed bring back any information that may be required. It happens, we rarely do it, and it creates a safety net so that even us mods don't permanently delete information.
This includes accounts. You would be hard pressed finding any site that would remove accounts entirely as it would affect their database and indexing. What they would do is index and archive the information, however Guild has never — and will never — been set up for that because there is no reason for us to delete an account. Remember that old saying, "Everything on the Internet is permanent"? Well that cannot be even more true when you have sites like Wayback Machine that record historical snapshots of the Internet. So the context of the account and the post never truly disappear...
On another note, looking at the account it does seem to be what I would call still currently active. There was a character made recently and they were in an RP a month ago that I myself happened to show some interest in, so I can validate this activity. Now people take a break and some people disappear for a few months or a year before coming back, but we typically don't ban accounts that are recently active because the person behind the screen doesn't want to roleplay any more. We have banned people who have stumbled across their account after several years and realized they don't want it anymore — just as a good will gesture — but that is a different scenario with a visible, active evidence trail when compared to someone who may be having a random weekend where they have a change of heart. I state this because we cannot verify the identity behind the account and whether the person making such a delete request is in fact who they say they are or the true user of the account, ie: did someone random access it and make the request for the lulz.
To touch on the legal aspect mentioned, I do have my doubts about this. A will is a legal document to divide up assets and property amongst benefactors. It would not be used as a request to delete a random account off a random Internet site. Even if such a wish was to be added it would have to have the signed approval of the second party, Mahz, to even be counted as legal, and to ensure it was even possible. I can assure you this would not be the case because even us moderators have to do some high level witchcraft to summon him for an easy catch up chat and in those times he has never mentioned any legal aspect with a member's last will. To put it bluntly, we actually don't have any obligation to follow this request.
As mentioned at the beginning, any further matters should be discussed in PM.