Belleville: 618-234-9800 | Edwardsville: 618-656-2244 | ST. LOUIS: 314-421-2325
William D. Stiehl
Email  |  Download PDF Bio
Legal Assistant: Elizabeth Ward



Tulane University School of Law – J.D. – 1977
Vanderbilt University – B.A. – 1974

Legal Services

Bar Admissions

  • Illinois

Court Admissions

  • United States Supreme Court
  • Untied States Court of Appeals for the Seventh Circuit
  • United States Court of Appeals for the Eighth Circui
  • United States District Court for the Southern District of Illinois
  • United States District Court for the Central District of Illinois
  • United States District Court for the Eastern District of Missouri

William D. Stiehl, Jr.


William “Bill” D. Stiehl, Jr. is an of counsel attorney with Mathis, Marifian & Richter, Ltd., who serves clients in the areas of personal injury, workers’ compensation, commercial litigation, education law, and white collar criminal defense.

In 2018, Bill was appointed by the Illinois Supreme Court to serve as Circuit Judge for the 20th Judicial Circuit Court of Illinois in St. Clair County, completing the term of the late Judge Robert LeChien. He was then appointed as an at-large circuit judge for the 20th Judicial Court of Illinois in St. Clair County from 2020 to 2022 by the Illinois Supreme Court.

He began his legal career as a St. Clair County assistant public defender, where he handled major felony cases. Later, he became a partner at several Belleville law firms, where he tried civil and criminal cases in both federal and state courts. Bill also served as Special Assistant Attorney General for the state of Illinois, where he handled eminent domain cases. In 2011, he established his private practice, the Law Offices of William Stiehl Jr.

Professional Affiliations

Bill is licensed to practice law in Illinois. He is a member of the Illinois State Bar Association, St. Clair County Bar Association, National Council of School Attorneys, and Illinois Council of School Attorneys.

Community Involvement

Bill is dedicated to serving his community. He played a key role in founding Family Hospice in Belleville and served on its original Board of Directors. He provides free legal representation for those who cannot afford it through the Land of Lincoln Legal Foundation. Bill is also a member of the Illinois State Police Merit Board and the Board of Directors for the Greater East St. Louis Community Fund. Additionally, he has been a generous sponsor of Belleville’s Art on the Square for many years.