Clement C. Hallam of Commack on May 18, 2023, 96 years of age. Beloved husband of the late Evelyn. Loving father of Michael Hallam and his wife Barbara, Christine Willoughby and her late husband Rodney, and the Late Janet D'Andrea and her late husband Richard. Cherished grandfather of Julie Meier (Richard), Robert Hallam (Lauren), Kimberly McElroy (Brian), Travis Pomposello (Tamara), Nicole Hoger (Max), James Greco, Richard D'Andrea (Jen) and Bonnie D'Andrea (Charles). Adoring great grandfather of 13. Visiting Sunday 2- 6 pm, Funeral Service Monday 9:30 am at Nolan Funeral Home, 5 Laurel Avenue, Northport, NY, burial to follow at Commack Rural Cemetery.