Two 13-year-old Wisconsin boys have been charged with first degree murder for the brutal slaying of one boy's great-grandmother, whom they allegedly bludgeoned with a hammer and hatchet before robbing her spare change and going out for pizza. Both boys, Antonio D. Barbeau and Nathan J. Paape, were charged Friday as adults in the death of Barbeau’s great-grandmother, 78-year-old Barbara J. Olson, prosecutors said. In a crime that was both gruesome and callous, the boys are accused of going to Olson’s Sheboygan, Wis., home on Sept. 17 “to get some money,” the Milwaukee Journal Sentinel reported