John David Zwanzig ‘57 passed away June 1, 2021 in Ottawa, IL, surrounded by his children. He was a graduate of Ottawa Township High School, Illinois Wesleyan, and John Marshall Law School. Dave started his career as a private attorney in his father’s practice. He later became the Assistant State’s Attorney of LaSalle County, and then went on to become a LaSalle County Associate Judge, where he served on the bench for 25 years. He also taught family law at IVCC and the Sheridan Correctional Center. Dave was known by many for his generosity and his desire to help others. He is survived by his children, four grandchildren, his former wife, a brother, and a step-daughter.