As time goes on...

Era of
When the legendary came to the world he killed many evil people and created peace in a world.

Era of and
When the and  started they first fight against each other the war started between  and .During that time two people loved each other and they were from Uchiha and Senju clan.They had a son that they named Minato and because in that time it was a crime that Senju man and Uchiha woman have child they giv'ed him last name Saitō] so his full name was Minato Saitō.They were busted by father of a mother of Minato Saitō and killed,but they gave the baby to some people that raised him.

Era of Saitō Clan
He was born without ability to have or  like his mother and father.At the age of 1 the Fire Giant of Lava was sealed in him by the people that raised him up.They sealed giant in him because he was very weak and he was almost dead.They saved his life.He lived his life hidden until one day he created a Saitō Clan and become'd a leader of the clan.His clan in that time had just 5 member's.

Era of Second Hope for Saitō Clan
With the Shimura Clan Woman he had son Yokaze Saitō.All the member's of Saitō Clan had children so Saitō clan grow'ed very fast.When he frow up he become'd second leader of the Saitō Clan.He married Hatake Clan Woman.