Heyl Royster

Heather Mueller-Jones

Of Counsel
Edwardsville, IL

Joined Firm in 2016

Heather is a tenacious litigator who cares for her clients, has excellent relationships with fellow members of the bar and judiciary, and works hard to obtain the desired outcome for her clients, whether that be taking a case to trial or negotiating a settlement. 

  • Founder of the Madison County Women Lawyers
  • First and Second-Chair trial experience
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Heather Mueller-Jones

Attorney in Edwardsville, IL

Heather has been practicing for over 17 years and has defended clients in negligence, breach of contract, premises liability, dramshop, wrongful death, defamation, professional liability, fraud, conspiracy, infliction of emotional distress, nursing home, insurance coverage, and product liability cases. As Of Counsel in the firm's Edwardsville office, she has significant experience in litigation throughout southern Illinois and Missouri, including St. Clair County and Madison County, Illinois. With first- and second-chair trial experience, Heather has obtained defense verdicts in trial, mandatory arbitrations, and has argued and won summary judgment motions in state and federal court venues. She has also written, argued, and won appeals in the Fifth District of Illinois.

Heather's empathy for her clients facilitates a relationship with them that allows her to handle the more challenging clients. Heather believes that forming relationships based on respect and dignity results in better client outcomes. She works zealously for her clients and understands the hardships, nervousness, anxiety, and stress that they are experiencing. As such, her clients trust her and know she is working for their benefit.

Heather has significant ties to the community, which benefits her clients, as she has a pulse on the community and its leaders. She founded and administered The Maryville Connection Facebook group, which has over 10,000 members and provides information for the community and supports small businesses. She and her late husband are former Madison County Board Members; she founded the Madison County Women Lawyers Group and is a founding member of the 100+ Women Who Care from the 618. 



J.D., Southern Illinois University School of Law

B.S., Southern Illinois University – Edwardsville, Business Administration

Licensure(s) and Admission(s)

State Courts of Illinois

State Courts of Missouri

United States District Court for the Central District of Illinois

United States District Court for the Southern District of Illinois

Professional Affiliations

Illinois State Bar Association

Madison County Bar Association

Madison County Women Lawyers

The Missouri Bar Association

Community Involvement

100+ Women Who Care from the 618, Founding Member

Madison County Board of Directors, Former

Madison County Women Lawyers, Founder and Member



“It’s Facebook Official, I’m Perfect,” Power Up Women’s Conference & Troy/Maryville/St. Jacob/Marine Area Chamber of Commerce (2017)

“The Local Governmental and Governmental Employees Tort Immunity Act Update,” Heyl Royster's 32nd Annual Claims Handling Seminar (2017)


“Working Without Fear: Orders of Protection Available in the Workplace,” Illinois Association of County Board Members County Bulletin (2019)

When is a Riding Trail Really a Riding Trail? Updated,” Heyl Royster Governmental Newsletter (2019)

Working Without Fear: Orders of Protection in the Workplace,” Heyl Royster Governmental Newsletter (2019)

"When is a Riding Trail Really a Riding Trail?" Illinois Parks Association Risk Services Newsletter (2018)

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