MILWAUKEE, Wis. (WTAQ) - A man found dead in a house fire was identified Wednesday as 50-year-old Donald Geldon of Milwaukee. Firefighters found his body after they put out the blaze on Monday night in Franklin. Investigators said they believe the house was not occupied at the time, and was being renovated. Police said Geldon was an acquaintance of the property owner. Franklin Police and firefighters are still trying to figure out what started the blaze. The state fire marshal is also part of the investigation.