Saranthia is mentioned by Saydhi as a name once given to the Vault of Tears. However, her exact wording is open to interpretation. Saranthia could be considered the entire structure housing the Vault of Tears, or the geographical location that contains it.
Saranthia may have been Ausar's estate before his memory was wiped, though this has not been officially revealed. Yet it has been generally accepted that Saranthia was a holding facility that was ruled by Ausar's House.