Board Thread:Lore Discussion/@comment-24.44.141.89-20131113224543/@comment-86.148.211.231-20131228105625

The Tsaesci, which means Snake Palace, are a race of vampiric serpents originating from the continent of Akavir, east of Tamriel

Quoted from UESP.net I know it's unofficial, but it's the best i've seen