Marshown's mother, Nalena Triplett, 25, of Chicago's Englewood neighborhood, said the two boys were at her father's home in the 1700 block of West Steuben Street in the Morgan Park neighborhood. Marshown was spending the weekend at his grandfather's house, and they were supposed to go to the Shedd Aquarium, she said. While the boys waited for her father to get home from work, her father's girlfriend watched them, Triplett said.