The Drow houseolds of the Tarantulas are made up from descendants of the 13 clans that chose to hold onto Lothiriels memory. Each household will, though may not be able to, trace their lineage to one of these clans.
Over the many centuries since they first split into the Underdark, some clans have become all but extinct, but their memory lives on.
Further Reading: Dark Elven Clans
Further Reading: Record of Births and Marriages of the Elven People
Further Reading: Early Elven Timeline
Illythiri Clans
Clan Cancarneyar
Founded by Lothiriel Cancarneyar
Clan Eclavadraar
Founded by Ergosal Eclavadraar
Clan Kirashaar
Most notably led by Kiransalee Kirashaar
Clan Mistrivven
Founded by Kadriel Mistrivven, later led by her husband Ineluki Mistrivven
Clan Aryvandaar
Founded by Skiasca Aryvandaar
Clan Kerithrion
Founded by Lualyrr Kerithrion
Clan Aleval
Founded by J'Imasro Aleval
Miyeritari Clans
Clan Nimeson
Founded by Neeloc Raye Nimeson
Clan Riklaurin
Founded by Vhaerun Riklaurin
Clan Taurenean
Founded by Schandalun Taurenean
Clan Orishaar
Most notably jointly led by Selvetarm Cancarneyar and Eilistraee Cancarneyar
Aquillari Clans
Clan Faerondarl
Founded by Forbeo Faerondarl
Clan Keltormiir
Founded by Ma'Azabiir Keltormiir, notably led by Kanchelsis Keltormiir
