Mary C. Willett (nee Collins) age 96 of Des Plaines, Illinois passed away on November 27, 2020 in Des Plaines, Illinois. Beloved wife of the late Francis C. Loving mother of Michael (late Andrea), Patrick (Theresa), Kathleen (Thomas) Mietus, Timothy, Late Thomas (Cathy) Terry (Rosa) and Carolyn Willett. Cherished grandmother of Sean, Coleen, Jennifer, Megan, Thomas, Lindsey, Chris, Kelly, Sean and Ryan. Proud great grandmother of 15. Services will be private. For information please call the funeral home at (847) 699-9003.