What happened to the Telvanni family? They don't seem to appear in games set in later timeframes, and I was wondering if they are still around somewhere.
Please note that I'm not referring here to the Great House1 here, but to the members of the original Telvanni bloodline, those that bear this surname.
It is known that inside Great House Telvanni advancement often means killing those that have a superior rank to take their place, and I suppose it is for this reason that the Councilors (at least during the timeframe of TES3:Morrowind) don't belong to this bloodline2.
I'm pretty sure that there aren't any individuals in TES3:Morrowind that carry this surname, but I've only played this game and TES2:Daggerfall, so I can be lacking knowledge. As a term of comparison, many individuals of House Hlaalu also carry the Hlaalu surname, so it is highly reasonable to infer that the name of a Great House derives from an actual surname, possibly of the original founder bloodline.
Are there known individuals that belong to the original bloodline during other games, and it is known or at least possible to reconstruct the history of the family and what happened to them, to make them basically disappear during the timeframe of Morrowind?
1. A Dunmer Great House is something similar to a clan / political party, not unlike what an Ancient Roman Gens was. Basically, it is an enlarged clan that can be joined not only by birth but also by marriage, adoption, and possibly other means.
2. Granted, the Councilors are mainly known only by name, but I think that it is reasonable to infer that belonging to the original Telvanni bloodline was something of high prestige, so if someone was indeed a true Telvanni, it would have used the surname.