Family Law Attorneys
Graham P. Wiemer
Founder
BIO
Graham P. Wiemer is a Founding Partner of both MacGillis Wiemer, LLC and Wisconsin Family Law Resources. Graham represents men and women in all aspects of family law. He often works with individuals on Wisconsin divorce, paternity, child custody and visitation, child custody jurisdiction, support, property division, domestic violence issues, domestic partnership dissolutions, and post-judgment matters. He represents parents and grandparents, and is often appointed as a Guardian ad Litem to represent the best interests of minor children. He is a trained and experienced mediator and assists parents and couples in resolving child-related and financial issues privately and without court involvement.
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Graham is active in representing individuals in the collaborative divorce process. He is the President of the Collaborative Family Law Council of Wisconsin (CFLCW) and currently sits on the CFLCW Board of Directors.
Graham sees first-hand how collaborative practice helps reduce the negative impact of court on children and families. He believes in an interdisciplinary approach to the practice of family law and often incorporates techniques of the collaborative process into many of his cases. His experience as a Guardian ad Litem has taught him how to help parents understand the changing dynamics of their family from their children’s perspectives.
EDUCATION
J.D., University of Notre Dame
B.A., Political Science and Philosophy, University of Dayton.
CONTACT INFORMATION
Phone: 414-372-0909
Email: graham@macgilliswiemer.com
Sarah C. Whiting
Founder
BIO
Sarah C. Whiting is a Partner at MacGillis Wiemer, LLC and Co-Founder of Wisconsin Family Law Resources. She focuses on family law and represents individuals in all matters related to divorce, paternity, grandparent visitation, business valuation, support, property division, and child custody and placement issues. Sarah is an advocate for the best interests of children when appointed as Guardian ad Litem in Family Court. She is also a certified mediator, trained collaborative practitioner, and a Certified Divorce Financial Analyst (CDFA).
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Sarah earned a Bachelor of Arts in psychology at the University of Wisconsin at Madison, and a law degree at Marquette University. Prior to attending law school, she worked as a social worker for Wraparound Milwaukee, where she assisted children and families with accessing legal, mental health, educational, and other services. Sarah focuses on assisting parents and clients in confronting conflict and resolving disputes without court involvement. While Sarah believes out-of-court settlement is ideal for restructuring families, she is an experienced trial attorney if court involvement is required.
Sarah was named a Super Lawyer in 2023. She looks forward to transitioning to the role of lead instructor at the University of Wisconsin-Milwaukee’s Family Mediation Certificate.
EDUCATION
J.D., Marquette University
B.A., Psychology, University of Wisconsin - Madison
CONTACT INFORMATION
Phone: 414-372-0909
Email: sarah@macgilliswiemer.com
Brian C. Hartley
Founder
BIO
Brian is a Partner at MacGillis Wiemer, LLC and Co-Founder of Wisconsin Family Law Resources. He focuses his practice on family law, and trust and estate administration. His family law practice includes divorce, custody and placement, paternity, property division, maintenance, and child support matters.
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Before joining the firm, Brian was a Jefferson County Circuit Court Commissioner and Deputy Register in Probate. His commissioner duties included, among other things, presiding over nearly every aspect of family law matters. Brian uses his unique perspective as a former judicial official to help his clients get great results inside and outside of the courtroom. His judicial experience has also taught him the negative impact, and limited long-term resolution, litigation can have on children and families. To help reduce the negative impact divorce can have on families, Brian regularly practices alternative dispute resolution such as collaborative divorce and mediation, which can lead to more successful long-term solutions.
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His duties as Deputy Register in Probate included the review of probate administration documents for accuracy and processing through the court system, conducting necessary hearings for the efficient administration of probate matters, and addressing questions and concerns of the public and attorneys.
In addition to his judicial background, Brian has experience as a Milwaukee County Child Support attorney. During his time with the Milwaukee County Child Support Agency, Brian litigated thousands of child support cases. His involvement in child support cases provides him the experience to effectively address his client’s child support concerns.
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Brian is a graduate of Marquette University where he received his Bachelor’s Degree and Juris Doctorate. While in law school, he was the editor of the Marquette Sports Law Review and participated in moot court competitions.
EDUCATION
J.D., Marquette University
B.A., Political Science, Marquette University
CONTACT INFORMATION
Phone: 414-372-0909
Email: brian@macgilliswiemer.com
Kimberly A. Reklau
Partner
Brenton S. Riggall
Attorney
Lauren P. Brasington
Attorney
BIO
Kimberly focuses her practice in the area of family law. She represents clients in a wide variety of family law matters relating to divorce, paternity, custody, placement, child support, enforcement, modification, and pre-marital agreements.
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Although accustomed to working in high-conflict situations, Kimberly is known for guiding her clients with a calm and reasonable approach. Working closely with clients to understand their goals and provide them with individualized strategies to achieve the best resolution to their cases is a top priority for Kimberly. She provides clients with an honest assessment of relevant legal issues and potential outcomes in order to take the proper steps to achieve the most favorable result. She endeavors to resolve cases amicably through negotiation, but is experienced in litigation and prepared to handle cases in court if a settlement is not possible.
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In 2013, Kimberly was included in the Top Women Attorneys in Illinois. In 2013 and 2014, Kimberly was selected as a Rising Star by Illinois Super Lawyers. She was chosen as an Emerging Lawyer by Leading Lawyers in 2015, 2016, 2017, and 2018, a designation reserved for the top 2% of lawyers under 40 years of age.
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Kimberly is licensed to practice law in Wisconsin and Illinois.
EDUCATION
J.D., John Marshall Law School
B.A., University of Wisconsin - Eau Claire
CONTACT INFORMATION
Phone: 414-372-0909
Email: kimberly@macgilliswiemer.com
BIO
Brenton S. Riggall is an attorney at MacGillis Wiemer, LLC, and focuses his practice exclusively on family law, assisting clients with a wide range of issues including, but not limited to, divorce, paternity, custody, placement, child support, and post-judgment issues.
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Prior to attending law school, Brenton worked at MacGillis Wiemer as a paralegal on the family law team. As a paralegal, Brenton gained valuable experience working alongside attorneys and clients as he worked on every aspect of the case from intake to trial. Brenton’s passion for helping clients and their families during this stressful period of their lives was foundational in his decision to attend law school.
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Brenton earned his law degree from Marquette University Law School. During law school, Brenton was an active member of the Child & Family Law Society and recipient of the CALI Excellence for the Future Award in Interviewing & Counseling. While attending law school, Brenton continued to assist the clients and families of MacGillis Wiemer as a law clerk.
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Brenton is originally from Bendigo, Australia, but has spent the majority of his adulthood in Wisconsin. Brenton received his undergraduate degree from La Trobe University (Australia), which included two semesters studying abroad at the University of Wisconsin – La Crosse.
EDUCATION
J.D., Marquette University
B.A., Education, La Trobe University
CONTACT INFORMATION
Phone: 414-372-0909
Email: brenton@macgilliswiemer.com
BIO
Lauren P. Brasington is an attorney at MacGillis Wiemer, LLC, and focuses her practice in the area of family law, often assisting clients with a variety of family law matters relating to divorce, paternity, custody, placement, child support, and post-judgment issues.
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Lauren is originally from Doylestown, Pennsylvania, but spent the majority of her childhood in Waukesha, Wisconsin. She earned her B.S. from the University of Wisconsin – La Crosse in Political Science, with minors in Legal Studies and Professional & Technical Writing.
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Lauren earned her J.D. and certificate in Litigation from Marquette University Law School. While attending Marquette, Lauren actively participated in the Marquette University Law School Moot Court Association and served as the Associate Justice of Intramural Competitions on its executive board. During this time, Lauren competed in the National Moot Court Competition hosted by the New York City Bar Association, where she and her team placed as first runners-up in the Regional rounds, advancing them to the National rounds. Lauren was an active member of the Association for Women Lawyers, and the Children and Family Law Society. Lauren was also inducted into the Pro Bono Honor Society for completing more than 50 hours of pro bono service at the Marquette Volunteer Legal Clinic.
EDUCATION
J.D., Marquette University
B.A., Political Science, University of Wisconsin- LaCrosse
CONTACT INFORMATION
Phone: 414-372-0909
Email: laurenb@macgilliswiemer.com