The jury reached a unanimous guilty verdict after nearly two hours of deliberation on Monday.
An autopsy showed the boy died of head and internal injuries due to blunt force trauma.
Attorney Sandra Allen said yesterday that testimony from Draper’s daughter Laura Rinehart was consistent with the evidence presented.
Rinehart blamed her father, who she said repeatedly abused her children. She claimed she was too afraid of him to do anything about it.
She and her mother Nancy are both serving sentences for their role in Joseph’s death.
Draper will be sentenced in November after being convicted of child abuse resulting in death and child abuse resulting in injury.
By Brent Wiethorn, KKPR, Kearney