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Big Firm Experience with a Personal Touch

The lawyers of Merrigan, Brandt, Ostenso & Cambre, P.A. serve as trusted advisors to corporations, small businesses and individuals throughout the Minneapolis/St. Paul area. With more than 100 years of combined experience in business law, family law, criminal law, personal injury law, real estate and estate planning, we are uniquely qualified to handle your legal needs. Two of our partners have been voted Super Lawyers by Minnesota Journal of Law & Politics.

Providing trusted advocacy in business law, family law, real estate and estate planning

As a small firm, we view our clients as peers, not numbers. By developing personal relationships with our clients, we are able to better understand their needs and devise creative solutions to their legal problems. We also strive to provide clients with outstanding value for their money.

To learn more about the attorneys of Merrigan, Brandt, Ostenso & Cambre, P.A., we invite you to review their individual profiles:


Mara E. Ronfeldt
Legal Assistant

Mara grew up in the Black Hills of South Dakota and has background in legal and administration. Before joining our firm, Mara worked as a legal assistant with the Bangs McCullen Law Firm in Rapid City where her time was dedicated to work in the areas of family law, criminal defense, and large litigation files. Mara is planning to continue her career in the legal field and when she is not working she enjoys spending time with her dog, and hiking and enjoying the outdoors. Mara is a key member of the MBOC team.


Mark Kerfeld
[email protected]

Brandt Criminal Defense

Merrigan, Brandt, Ostenso & Cambre, P.A. is dedicated to customer satisfaction in Minnetonka. We recognize that our clients have busy lives, which is why we offer flexible office hours and a convenient Hopkins location with plenty of parking. To set up an appointment with one of our knowledgeable attorneys, call us today at 952-777-2283.