HILLSBORO, MO: 636-797-2665

STE. GENEVIEVE, MO: 573-880-7488

Wegmann Law Firm – Family & Personal Injury Attorney Hillsboro & Jefferson County, MO Wegmann Law Firm building location




Dennis H. Tesreau



Practice Areas: Worker's Compensation; Municipal Law; Personal Injury; Civil Litigation; Probate

Admitted: 1976, Missouri; 1993, U.S. District Court, Eastern District of Missouri; 1994, U.S. Court of Appeals, Eighth Circuit

Law School: University of Missouri, J.D.

Member: Jefferson County Bar Association (Secretary, 1985-1986; President, 1986-1987); The Missouri Bar.

Biography: Member, Missouri Law Review, 1974-1976. City Attorney, Herculaneum, 1982-present. City Attorney, Byrnes Mill, 1998-present. Attorney for: Rock Township Ambulance District, 1981-present; Valle Ambulance District, 1990-present; Jefferson Memorial Hospital Association. Prosecuting Attorney, Hillsboro, 1977-1990. Community Advisory Group Board of Directors, Missouri Foundation for Heath. Co-Chairman, City of Herculaneum Bicentennial Committee. Co-Chairperson, Jefferson County Charter Commission; Commissioner, Missouri Department of Mental Health.

Born: St. Louis, Missouri, December 24, 1951


Upon Dennis Tesreau's arrival at the Wegmann Law Firm in 1976, he gained experience in a variety of areas of the law, including municipal and government law, personal injury, employment law, and real estate. In particular, he has established an expertise in workers' compensation law, representing both employers and employees.


In recent years, Mr. Tesreau has nurtured a growing municipal practice, providing governmental bodies with solid legal advice and representation regarding employment practices and statutory procedures, as well as a vast list of other legal questions that are presented to governmental bodies. While representing numerous cities and special governmental districts, he continues to provide excellent representation to his workers' compensation clients and  individuals seeking legal assistance on a variety of general legal questions. In addition, he has gained a reputation within the county as a specialist in adoption matters.





Bianca L. Eden



Practice Areas: Municipal Law; Estate Planning; Estate Administration; Tax Law; Business Organization; Real Estate; Adverse Possession; Boundary Disputes; Easements; Quiet Title.

Admitted: 2000, Missouri

Law School: University of Missouri, J.D.

Member: Jefferson County Bar (President, 2005-2006); Jefferson County Women's Bar Association (Treasurer 2009).

Biography: City Prosecutor: Hillsboro, 2000; DeSoto, 2001-2003.

Born: Aurora, Missouri, February 26, 1974

Cases: Gateway Foam Insulators, Inc. v. Jokerst Paving & Contracting, Inc., 279 S.W.3d 179 (Mo. 2009); Shapiro Brothers, Inc. v. Jones-Festus Properties, LLC, 205 S.W.3d 270 (Mo. App. E.D. 2006); Schlientz v. Rock Township Ambulance District, 146 S.W.3d 404 (Mo. App. E.D. 2004); In re N.S., 77 S.W.3d 655 (Mo. App. E.D. 2002); State ex rel Stubblefield v. Bader, 66 S.W.3d 741 (Mo. 2002).


Bianca L. Eden was born and raised in Lawrence County in Southwest Missouri. After graduating from Aurora High School, she attended the University of Missouri-Columbia on several academic scholarships. She graduated from the University of Missouri-Columbia with a Bachelor of Arts in History, magna cum laude, and a Bachelor of Science in Education, summa cum laude. Upon finishing her undergraduate work, she enrolled in law school at the University of Missouri - Columbia.


After her graduation from law school in 2000, she and her husband moved to Jefferson County and she began working for the Wegmann Law Firm. Within less than a year, she had tried cases to conclusion and successfully prosecuted appeals to the Missouri Court of Appeals, Eastern District, and to the Missouri Supreme Court. In her tenure at the firm, she has established a varying practice that includes probate, estate planning and administration, real estate, juvenile, business organizations, municipal, tax, and school law.


She served as the Jefferson County Bar Association President from 2005-2006. She currently serves as a member of the Jefferson County Family Drug Court Team and as Treasurer of the Jefferson County Women's Bar Association.




Jessica A. Mikale




Practice Areas: Family Law; Paternity; Divorce; Modification; Custody; Child Support; Name Changes; Juvenile Law (Abuse and Neglect); Guardianship and Conservatorship; Landlord-Tenant Law; Wills; Living Wills; Powers of Attorney; Local Government Law; Municipal Law


Admitted: 2003, Missouri; 2004, U.S. District Court, Eastern District of Missouri


Law School: University of Missouri at Columbia, School of Law, J.D.


Member: Jefferson County Bar Association; Women's Law Association of Jefferson County (President, 2011-2012); Young Lawyer's Association of Jefferson County (Secretary, 2003-2004).


Biography: City Prosecutor, DeSoto, 2004-2011. Listed, Cambridge Who's Who Executive and Professional Registry. Member: DeSoto Chamber of Commerce. Board of Directors: Jefferson County Port Authority.


Cases: In re T.R.J., 214 S.W.3d 408 (Mo. App. E.D. 2007); Okie Moore Diving & Salvage v. Watkins, 239 S.W.3d 631 (Mo. App. E.D. 2007); Gumpanberger v. Jakob, 241 S.W.3d 843 (Mo. App. E.D 2007); Gateway Foam Insulators, Inc. v. Jokerst Paving & Contracting, Inc., 279 S.W.3d 179 (Mo. 2009).


Jessica Mikale spent the first part of her life growing up in the San Fernando Valley in southern California before moving to St. Louis in 1993. Shortly thereafter, she went to high school in St. Louis before earning her B.A. in Biology, magna cum laude, with minors in Spanish and political science from Truman State University. From there she attended the University of Missouri-Columbia School of Law where she graduated in 2003 with her J.D. and a Certificate in Electronic Commercial and Intellectual Property Law.


After graduation, she and her husband moved to Jefferson County where she began her practice with the Wegmann Law Firm. Her practice initially included family law, landlord-tenant law, workers' compensation defense, public entities, estate planning, personal injury cases, insurance defense (including jury trial work in Jefferson, St. Francois, Franklin, Washington and Ste. Genevieve Counties, and the federal court) and intellectual property (trademarks and copyrights).


Today, Ms. Mikale has focused her practice on family law (including dissolutions, paternity actions, and modifications), real estate law (including representing several Jefferson County subdivisions) and municipal law.  She is also one of 10 court-appointed attorneys to represent children and parents in juvenile cases in Jefferson County and a graduate of the Missouri Bar Leadership Academy (2010-2011).


Ms. Mikale is a member of the Jefferson County Bar Association (Treasurer/President-Elect 2014-present), the Jefferson County Women's Bar Association (President 2011-2012), the Young Lawyers Association of Jefferson County (Secretary 2003-2004) and the Jefferson County Bar Association Pro Bono Committee.




Mark T. Bishop




Practice Areas: Personal Injury; Estate Planning; Contracts; Juvenile Law; Criminal Defense; Traffic Violations

Admitted: 1996, Missouri

Law School: Southern Illinois University, J.D.

Member: Jefferson County Bar Association; The Missouri Bar.

Born: 1970


Mark started his legal career in Jefferson County in 1996 as an Assistant Public Defender in Hillsboro, Missouri. From 1997 to 2007, Mark worked for Robert (Bob) McCulloch as an Assistant Prosecuting Attorney with the St. Louis County Prosecuting Attorney's Office. During that time, Mark was lead counsel in numerous jury trials for cases ranging from misdemeanors to murder in the first degree. He also prosecuted numerous vehicular homicide and vehicular assault cases.


In February 2007, he became a trial attorney with the firm in Hillsboro. During his tenure with the firm, Mark has represented individuals, as well as public agencies. He has handled cases involving personal injury, estate planning, construction/contractor lawsuits, and criminal defense/traffic matters. During his career he has been lead counsel in over fifty jury trials in Jefferson, Franklin, St. Francois, St. Genevieve and St. Louis Counties with much success.


Community service has always been important to Mark. Currently, Mark serves as President of the Festus-Crystal City Kiwanis Club and the Festus-Crystal City Rotary Club. He is also on the Board of Directors of the Twin City Chamber and the Festus Library Board. Previously, he was twice elected to the Windsor School Board and served on the Jefferson County Library Board of Directors, the Jefferson County YMCA Board of Advisors, and the Parish Council of Our Lady's Parish in Festus.


Mark and his wife, Rebecca, live in Festus with their four sons.



James M. Kreitler



Practice Areas: Business Law, Estate Planning, Personal Injury, General Litigation

Admitted: 2011: Missouri and Illinois, 2012: Southern District of Illinois, 2013: Eastern District of Missouri

Law School: Thomas M. Cooley Law School, Juris Doctor magna cum laude, Grand Rapids, Michigan; Undergraduate: Pensacola Christian College, B.A. History cum laude, Pensacola, FL

Associations: The Missouri Bar Association, Illinois State Bar Association, Jefferson County Bar Association

Biography: Senior Associate Editor, Thomas M. Cooley Law School Law Review, Moot Court Board, National Moot Court team, Non-Profit Clinic

Born: St. Louis, Missouri, September 11, 1984


James Kreitler grew up in Jefferson County, Missouri. He attended Twin City Christian Academy, and graduated from the school as the 2003 class salutatorian. After graduation, he attended Pensacola Christian College, graduating cum laude in 2007 with a B.A. in History, minor in political science. James graduated with his law degree from Thomas M. Cooley Law School, in September 2010 magna cum laude.


After passing both the Missouri and Illinois bar examinations in 2011, James began his law practice representing both businesses and individuals in regard to business formation, general litigation, contract drafting and negotiation, estate planning, asset protection, traffic and criminal infractions, non-profit corporations, and personal injury. He likewise works on several pro bono projects for military veterans, religious organizations, and non-profit corporations.


James lives in Festus, Missouri with his wife and children. He attends First Baptist Church in Festus/Crystal City.



Ramona Gau



Practice Areas: Criminal Defense; Family Law; Probate; and

Civil Litigation.

Admitted: 2006, Missouri.

Law School: University of Missouri - Columbia, School of Law, J.D.

Associations: Current Memberships: Missouri Bar Association; Jefferson County Bar

Association. Past Memberships: Mizzou Women's Law Association, 2006; Phi Alpha

Delta Law Fraternity, 2005-2006; 10th Circuit Bar Association, 2006-2012 (Treasurer,


Born: 1982


Ramona (Capkovic) Gau is a Jefferson County native; she grew up in High Ridge and graduated from Northwest High School. After high school, Ramona attended Hannibal-LaGrange University, where she majored in administration of justice. In 2003, Ramona completed her undergraduate studies, earning her Bachelor of Science degree, and graduating with honors (magna cum laude). From there, Ramona attended the University of Missouri-Columbia School of Law where she graduated in 2006, with her J.D.


Before graduating law school, Ramona was selected as an early hire to join the public defender's office upon completion of law school. After graduation, Ramona joined the public defender's office with the intention of sharpening her litigation skills. During her time as a public defender, Ramona represented clients for simple traffic tickets all the way to homicide cases. She tried numerous cases to juries, including serious felonies and homicide cases.


After her time with the public defender, Ramona joined a family law firm and exclusively practiced in the areas of divorce, child custody, modifications, orders of protection, and other family law matters. Today, Ramona puts her trial experience to use by focusing on criminal defense, family law, and other general civil litigation matters. Ramona is a member of the Jefferson County Bar Association and volunteers as a coach for the Northwest Junior Lady Lions Basketball League.



Previous Attorney Profiles


Will B. Dearing (1902-1975)


After founding and practicing in St. Louis with Moser, Marsalek and Dearing, Will B. Dearing joined M. C. Matthes in the formation of this firm in Hillsboro, Missouri, known as Matthes and Dearing in 1947. Will tried jury trials all over the eastern half of Missouri and had an extensive appellate practice. After M. C. Matthes was appointed to the Missouri Court of Appeals, Eastern District, and later the 8th Circuit of Court of Appeals whereas a young Federal Appellate Judge he wrote a Little Rock Decision, Will continued leading the firm with other historic trial lawyers, such as Samuel Richeson, J. Richard Roberts and Roland A. (Ray) Wegmann.


Samuel Richeson (1904-1976)


Samuel Richeson was born in Potosi, Missouri, where his father was a lawyer. Sam was a graduate of Washington University School of Law and practiced in Potosi from 1928 and served as a part-time probate judge until he joined Will Dearing in the practice at Hillsboro in 1955. Mr. Richeson tried jury and non-jury cases in nearly every circuit court in the State of Missouri. He had an extensive appellate practice and is remembered for his colorful and descriptive language.


J. Richard Roberts (1928-1975)


J. Richard Roberts was born in Farmington, Missouri, where he and his father attorney, Ray Roberts, and his brothers, Ray, Jr. and Clinton, all joined in the practice of law. He was a graduate of University of Missouri Law School at Columbia. In 1964, J. Richard Roberts joined the then Dearing Law Firm in Hillsboro and was awarded the Lon Hocker Young Trial Lawyer Award. His specialities were jury trials and appellate practice. He was once an Assistant Attorney General for the State of Missouri.


John A. Schneider (1942-1992)


John A. Schneider was born in Hillsboro, Missouri, to a two generation newspaper family. He received his undergraduate degree at Central Methodist College in Fayette, Missouri and his law degree from Washington University, where he was co-editor of the Law Review and was Order of the Coif. He was a concert pianist in addition to being an able jury trial lawyer with the ability to bring winning drama to the court room. He had an extensive appellate practice including writing for the appellant in one of Missouri's most extensively cited cases, Murphy v. Carron, 536 SW2d 30 (MO 1976).


Nicholas G. Gasaway (Retired 2005)


Nicholas "Nick" Gasaway has lived the majority of his life in Franklin County, where he was raised and resides to this day. Following his boyhood days in St. Clair, Missouri, Nick enrolled in the U. S. Merchant Marine Academy, where he graduated with honors in 1959. He served in the Merchant Marine and the United States Navy for several years before returning home to attend St. Louis University School of Law, graduating in 1967. During law school, Nick worked as a librarian at the Eighth Circuit Court of Appeals in St. Louis. Following law school, Nick initially went to work as a clerk for Judge M.C. Matthes in the U.S. Eighth Circuit Court of Appeals in St. Louis, after which he served as an assistant prosecuting attorney in St. Louis County for a year. Upon the advice and referral of Judge Matthes, Nick came to the Wegmann Law Firm in 1969. He originally resided in Hillsboro, Missouri, but returned to St. Clair where he and his wife have raised a large family.


Albert W. Dieffenbach, Jr. (Retired 2008)


Albert W. (Jake) Dieffenbach, Jr. grew up in St. Louis but spent his entire legal practice in Jefferson County. Jake received a B.S. in accounting and a J.D. from the University of Missouri. After practicing as an accountant for two years in St. Louis, Jake left the accounting profession to practice law in Jefferson County at the Anderson Law Firm.


For years, Jake continued his general practice in the firm that eventually bore the name of Anderson, Hammond, Dieffenbach & Wegge. After years of representing small businesses and individuals at his original firm, Jake joined the Wegmann Law Firm in 1991.


Jake represented working men and women and small businesses for years in various areas of the law, including personal injury, real estate litigation, family law, and probate and estate administration. In his later years of practice, Jake continued to represent a variety of clients while focusing on his expertise in divorce and custody issues. Jake's down to earth demeanor and common sense put many clients at ease as he provided them with legal counsel in difficult times.


Randall D. Sherman (Retired 2013)


Randall Sherman grew up in Jefferson County, graduating from Herculaneum High School before attending the University of Missouri, where he studied German and taught German while attending law school. He still remains fluent in the language. He graduated in 1987 from the University of Missouri Law School and then returned to Jefferson County where he lives with his wife and children.


Upon graduation from law school, Mr. Sherman began his practice at the Wegmann Law Firm, gaining expertise in a variety of areas of law, including insurance defense, personal injury, business organizations, and municipal law. He quickly established a reputation for excellent courtroom advocacy and has maintained a rigorous trial schedule. In particular, Mr. Sherman has become well known as an outstanding insurance defense attorney. In addition, Mr. Sherman focused his expertise in organizing and representing small businesses on a variety of issues, and also did substantial work in representing public water and sewer entities in growing areas. Whether his clients required zealous courtroom advocacy or prudent advice outside of the courtroom, Randall Sherman provided outstanding legal representation.


Roland A. Wegmann (Retired 2013)


Roland (Ray) Wegmann, born June 6, 1927,  was a native of St. Louis, Missouri (near north side) and educated in parochial and public schools until entering the U.S. Army Air Force in 1945. In military service, Mr. Wegmann taught teletypewriter exchange in communications. Upon discharge, Mr. Wegmann completed his education at St. Louis University School of Commerce and Finance and graduated from St. Louis University School of Law (class ranking: sixth) in 1953.


He served as a member of the editorial staff of the St. Louis University Law Journal. After a year as an associate of the Lusser and Dorsey Law Firm in St. Louis, he took employment at the Western Insurance Companies, Fort Scott, Kansas, as a claims attorney in St. Louis. He joined the law firm that now bears his name in 1965. (Dearing, Richeson, Weier & Roberts) Mr. Wegmann adapted well to the rural practice of law handling all types of cases, criminal and civil.


He has practiced extensively in the field of litigation in both state and federal Courts. Mr. Wegmann is well respected as an Appellate practitioner having briefed and argued many cases before the State Supreme Court and in the intermediate Appellate Courts. It truly may be said that Mr. Wegmann's almost fifty years at the bar were spent in the general practice of the law. Insisting that he, the firm and its members be known as lawyers - not simply as attorneys, is testimony to Mr. Wegmann's great respect for the practice of law and the pride that flows from the service it entails.





Jack C. Stewart



Jack Stewart was born to an agricultural family at Kahoka in Northeast Missouri. In addition to early hard farm work, he was schooled in public speaking and parliamentary procedure. A cum laude and distinguished military graduate of the University of Missouri in Columbia, he also received his law degree there and then served in the Army Judge Advocate General's (JAG) Corps from 1965-1970, including three years of military trial practice in Germany where he attained the rank of Major and was awarded the Meritorious Service Medal.


He returned to Missouri, settling in the Jefferson County seat town of Hillsboro, where he and his wife raised their three professionally-degreed sons.


His career with the Wegmann Law Firm concentrated on estate planning and probate and estate administration. He also was highly involved in real estate law and state, local and municipal law. His long experience in those areas gave him vast legal and practical experience in assisting clients to achieve wise estate planning that did not disrupt their personal life and the enjoyment of it unnecessarily.

jessica_logo Living will

Let me know what your services will do for me





We’re the Oldest and Most Experienced Jefferson County Law Firm!

Call now to learn more.


CTA-icon dennis_logo bianca_logo mark_logo shutterstock_102789674

Dennis H. Tesreau

Bianca L. Eden

Jessica A. Mikale

Mark T. Bishop

James M. Kreitler

Ramona Gau

Ramona Pic Bishop Eden Tesreau Mikale Kreitler