A New Castle man is facing charges in the death of a 2-month-old baby. 22-year-old Christopher Holmes is charged with criminal homicide, aggravated assault, simple assault and recklessly endangering another person in the death of his girlfriend’s daughter, who he claims to have fathered.  Police were called to an apartment on Pin Oak Drive Thursday for a report of a baby not breathing. The child was pronounced dead at UPMC Jameson Hospital. An autopsy showed the child died of blunt force trauma from the head. Police say Holmes was baby-sitting the child at the time of the injuries.