Two others had been saved from the ruins of Clan Cedar . Sethen had been the only survivor of Ash . There was no one to help him remember his history , no one to corroborate his previous identity .

Q with options: Give answer the following question using evidence from the above passage: Why do so few people remember Sethen besides the narrator ?
Options are: -- Sethen was mundane .; -- Sethen was a member of a destroyed tribe .; -- None of the above choices .; -- Sethen was forgettable .;
Sethen was a member of a destroyed tribe .