Donald Eppes was born on July 15, 1967 to Alan and Margaret Eppes. He was born at St. Vincent Hospital, a long and difficult delivery; Alan did not know any lullabies, so he sang the Sgt. Pepper album six times through. Alan related this when Don was stabbed and taken to St. Vincent's in "The Fifth Man" (season 5 episode 20) Don and Charlie graduated from high school on the same day though there was a five years age difference between them. This put a strain on the relationship between the brothers.