Biwako Sarutobi

was the wife of Hiruzen Sarutobi. She was one of the few people to know about the special circumstances surrounding Naruto Uzumaki's birth, acting as a midwife for Kushina Uzumaki. She was apparently killed by Madara Uchiha immediately after Naruto's birth.

Quotes

 * (To Minato Namikaze) "Good Lord, you're the Fourth Hokage! Don't panic! This is why woman have babies, you men can't handle pain!."