Dr. Redfern is Barney's biological father. Barney has been estranged from his father for the past 11 years. When the jeweler contacts Dr. Redfern to tell of Barney's purchase of Valancy's pearls, Dr. Redfern tracks Barney down to the island.
Dr. Redfern is the inventor of numerous pills, ointments and liniments for various ailments. One of Valancy's family members swears by the pills. Cousin Stickles is obsessed with the Redfern liniment for her back pain.
