John M. Wirth

Timothy Feeley is a health care litigation attorney at Hall render who advises hospitals and health systems, providers and health‑related businesses on disputes involving operations, governance and employment matters. Clients rely on Tim for practical and direct guidance on a wide range of disputes, including business, commercial and labor and employment matters that may escalate to formal litigation in state and federal courts. He frequently counsels clients on contract disputes, general bus...

Greg represents clients in the prosecution and defense of complex commercial litigation. His extensive experience in commercial litigation has prepared him to successfully represent large corporations as well as small businesses and individuals. Greg also has extensive experience representing individuals in inheritance litigation. He has successfully litigated many will contests and trust disputes throughout Wisconsin. Greg has accomplished tremendous results on behalf of trustees, personal r...

Michael J. Gentry is a lawyer recognized by Best Lawyers in the practice areas of Employment Law - Management and Litigation - Labor and Employment. Michael J. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Michael J. Gentry since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Michael J. Gentry is held by other lawyers.

Grant Killoran is a shareholder at O’Neil Cannon and the past Chair of its Litigation Practice Group. He has significant and diverse trial experience representing clients in Wisconsin State and Federal Courts, and courts around the country, focusing on complex business, health care and employment law disputes. Grant also devotes a portion of his practice to arts and entertainment law, with an emphasis on the music industry. Grant is listed in The Best Lawyers in America in the practice ...

Colleen E. Fielkow is a lawyer recognized by Best Lawyers in the practice area of Commercial Litigation. Colleen E. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Colleen E. Fielkow since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Colleen E. Fielkow is held by other lawyers.

John H. Wink is a lawyer recognized by Best Lawyers in the practice area of Banking and Finance Law. John H. practices law in Milwaukee, Wisconsin Best Lawyers has recognized John H. Wink since 2013. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which John H. Wink is held by other lawyers.

Christa is a commercial litigator with a focus on business relationships that break down. She also serves on the firm’s Board of Directors. With attention to detail, Christa especially enjoys tackling challenging procedural issues and working with large sets of data. Whether her client’s goal is to fight to win or resolve a dispute through settlement, Christa works hard for the best possible result for her client, relying on her good judgment and experience to give honest and prac...

Daniel A. Kaminsky is a lawyer recognized by Best Lawyers in the practice area of Real Estate Law. Daniel A. practices law in Milwaukee, Wisconsin Best Lawyers has recognized Daniel A. Kaminsky since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Daniel A. Kaminsky is held by other lawyers.

Jon Levine has a national practice focusing on representing employers in all areas of labor-management relations, including litigation before the National Labor Relations Board and in state and federal courts. He also has significant experience with: The National Labor Relations Act Union organizing campaigns Collective bargaining Labor arbitration Title VII The Americans with Disabilities Act The Age Discrimination in Employment Act The Wisconsin Fair Employment Act Jon’s notable succe...

Christy Brooks serves as Counsel to the firm where she focuses on school and family law, and litigation techniques. Her previous work for school districts had a special emphasis on state and federal laws affecting pupil matters including discipline and special education. In the family law area, in addition to divorce and paternity, her work included Collaborative Divorce cases. Her civic activities have included: Board of Directors: Wisconsin Equal Justice Fund, Greater Milwaukee Voluntary Ac...