It was because of his troubled relationship with his mother that he ended up living with his grandparents on their farm in North Fork, CA. According to Psychology Today, his mother, Clarnell, was an alcoholic who often forced Kemper to stay alone in the basement at night. At 14 he ran away to try to live with his father, but his dad rejected him and the unwanted child was sent to live with his grandparents, Ed Kemper Sr. and his wife, Maude.

According to what Ed Kemper said in an interview posted on YouTube, ten months after he moved in with his grandparents, he killed them. Per Psychology Today, Kemper found a similar disdain for his grandmother as he had for his mother, both of whom Kemper claimed were abusive. 

In former FBI agent Robert Ressler's book, "Whoever Fights Monsters," he wrote that Kemper was angry after his grandparents took back a gun they'd given him because he was using it to kill small animals and birds on the farm. Yet Kemper was still able to get his hands on a gun. 

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