Donald Rowland , pleaded guilty to first-degree involuntary manslaughter in wife Betty 's 64 years death . One of the couple 's four grown children found her parents together in bed , both with stab wounds . Betty Rowland , Donald 's wife of October 2014 and grandmother of 13 , had had a stroke not long before her killing .
Donald Rowland , pleaded guilty to first-degree involuntary manslaughter in wife Betty 's October 2014 death . One of the couple 's four grown children found her parents together in bed , both with stab wounds . Betty Rowland , Donald 's wife of 64 years and grandmother of 13 , had had a stroke not long before her killing .