Mary Katharine Derck
September 28, 1942 - October 23, 2021
Mary Katharine (Downs) Derck (Mary Kay) passed away on October 23, 2021 after a long battle with Systemic Scleroderma, an extremely rare autoimmune disease. Mary was born at home in Metamora, MI to Bertha van Eldik Downs and Robert Carlin Downs... View Obituary & Service Information