( CNN ) -- A house fire on the Fourth of July in Pennsylvania has claimed a 7th victim . A 2-year-old , Cordail Kuhns , was pronounced dead at 4 p.m. on Saturday , according to a spokesman for Crozer-Chester Medical Center in Chester , Pennsylvania . Spokesman Grant Gegwich was unable to release details on the cause of death . On Thursday morning , David Kuhns and his sons Shawn , 6 , and Skylar , 8 , died along with James Moore , who owned the three-story home where 14 people lived , said Capt . Fred Lenhart of the Lancaster City Fire Department . David Kuhns ' wife , Crystal Kuhns , and their daughter , Mickey , died later while being treated at the burn unit at the medical center outside Philadelphia , according to Gegwich . Investigators are ruling the 3 a.m. fire as accidental and say it was caused by a pan of grease left on top of a stove with the burner on high , said fire Capt.Ken Barton . Four people who were trapped on the third floor of the home escaped through a window onto a rooftop and into a neighbor 's house , officials said on Friday . One of those who did escape was the pregnant daughter of the deceased owner . Martha Moore , 27 , nearly eight months pregnant , escaped and within four hours of the fire delivered a girl by emergency cesarean section . `` It 's expected to be a bittersweet day . Her father dies and her baby is born , '' said Barton . Moore and David Kuhns died in the house while the two young boys died shortly after at the hospital . Two families lived in the home , located at 115 East Clay Street in Lancaster , Lenhart said . Investigators found three smoke detectors in the building but none was working , said Barton . Leigh Remizowski contributed to this report .
Death of 2-year - old brings toll to 7 in Fourth of July fire . Six members of one family died , as well as the owner of the house . Investigators rule the fire accidental , blame grease left on stove . Six people lived in the three - story house , an official count .