Hello!

Is there a list of Great House Dres controlled cities? I only know of Tear and Silnim Dale(?), but I hope there are more of them

Thanks for the help!

I think Necrom, but I really don't know.

Certainly not It's a Temple controlled necropolis, far away from anything Dres.

This political map may help: http://www.silgrad.com/oblivion/images/maps/Map_arch_TES3_Morrowind_Concept_Map.jpg

The map does show Necrom as a Dres city...

It's most definitely Temple-controlled, though, given its purpose and their connection to it.

Silgrad Tower is not famous for their lore-correctness, as I know and most of the city names are unreadable on the map

It's cool. It's an original concept map. The library has a copy too.

Silgrad Tower didn't make that map, it was an early Bethesda conceptual map (from either when TES3 was just being started on or when TES2 was just being started when it was still going to be based in Morrowind, can't remember which).

I don't know much about House Dres but a good place to look/ask would be the Tamriel Rebuilt site, as they are planning on creating the whole Morrowind province.