Edit:
Ah wait - you're looking to get the English name of all Locations displayed on your current Map?
That might be possible and a good solution! I'll have a look ... if it comes down to it you can get that Data from ESOHEAD:
http://esohead.com/map#439.2.50.50
http://esohead.com/zones#alliance:1
Edit 2:
Seems like they don't have everything stored as well - at least with a first glance
You'll probably have to embed a Library of those Location Names in your addon thought!
There is really really medicore localization support for the whole API afterall (almost non-existant).
Edit 3:
Just in case this translates all Item-Links to English no matter your client language:
http://www.esoui.com/downloads/info4...izedItems.html