A federal detective thought that this guy was the one responsible. 

Months after the Villisca murders, Henry was convicted of murder for killing his mother and grandmother in Missouri. Henry's weapon of choice is an axe. He also liked to cover windows and mirrors with sheets and articles of clothing, and he covered his victims with a bed sheet. Also, Henry seemed to wipe his axe clean after the murders which is similar to the Villisca case.

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He never got tried for this case. The detective on this case wanted to close the case by pinning the murder on someone- in the end he picked Henry to pin all of the murders on. There is nothing that ties him to the murders other than a similar style.