Crozier-Chester Medial Center spokesman Grant Gegwich said Cordial Kuhns died about 4 p.m. at the Delaware County hospital, The (Harrisburg) Patriot-News reported.
The boy's parents, Crystal and David Kuhns, and three of his siblings -- Skylar, 8, Shawn, 6, and Mickey, 4 -- also died in the fire, along with 64-year-old homeowner James Moore.
Moore's son, Jimmie Moore, 35, told the newspaper his father was helping the financially strapped family, who had been staying at the home for about a month and were to have moved into their own home Friday. The Kuhns were among 15 people living in the three-story brick home, the younger Moore said.
Notable deaths of 2014 [PHOTOS]