Jake Bird was tried and executed for the axe murders of Bertha Kludt and her daughter Beverly June Kludt.  It is suspected that he may have killed as many as 44 to 46 people.  After his conviction was announced, he said, "I'm putting the Jake Bird hex on all of you who had anything to do with my being punished.  Mark my words, you will die before I do."  Six people connected to the trial died. 

Website: https://www.drinkingthecoolaid.com/

Resources:

• Jake Bird: The Strange Story of a Tacoma Serial Killer and the Hex that Made Him Famous - SouthSoundTalk
• Police capture serial killer Jake Bird after he murders two Tacoma women on October 30, 1947. - HistoryLink.org
• Jake Bird | Murderpedia, the encyclopedia of murderers
• Omaha Ax Murders Part II: Jake Bird Arrives in Omaha – BRIANNA WRIGHT (wordpress.com)
• 
  
• Omaha Ax Murders Part III: The Aftermath – BRIANNA WRIGHT (wordpress.com)
• Serial killer Jake BIRD | The Tacoma Ax-Killer (serialkillercalendar.com)
• True Crime All The Time: Jake Bird on Apple Podcasts