Prescott O'Brian was the son of Morris O'Brian and Chloe O'Brian. Chloe first learned she was pregnant from CTU physician Dr. Hastings following her fainting spell during Day 6. Despite their arguments over the course of the day, both Chloe and Morris were overjoyed to receive the news. The two were eventually remarried, and Prescott was born on July 8 four years before Day 7. ("Day 6: 5:00am-6:00am", "Day 7: 4:00pm-5:00pm")