Who is Naruto's mother in Naruto?

His mother's name is Vortex Ai Chen, the wife of four generations of Huo Ying "Namikaze Minato". She is strong and lovely. She pinned her fantasy future and never give up on her son Naruto. His mother is the pillar of the Vortex clan, so Naruto took his mother's surname, perhaps in order not to let others know that he was Namikaze Minato's son, so as not to be killed.