Gregory C. Larson has been in the practice of law in Bismarck, North Dakota for 37 years, and is a partner of the Larson Latham Huettl Law Firm. His primary areas of practice are tax, probate, business planning, estate planning, nursing home planning, and elder law. He received his B.S. degree from the University of North Dakota, his J.D. degree from Gonzaga University, and his Master of Laws in Taxation (LL.M.) from the University of Miami. Greg is licensed to practice before the Supreme Court of North Dakota, United States District Court for the District of North Dakota, the Eighth Circuit Court of Appeals, the United States Tax Court, the United States Court of Federal Claims, and the United States Supreme Court. Greg is a member of the American Bar Association (Member, Taxation Section), State Bar Association of North Dakota (Member, Section of Real Property, Probate and Trust Law, Probate and Trust Law Committee), Western Dakota Estate Planning Council (President, 1983-84, Member, Board of Directors, 1982-2000), Christian Legal Society (Member and State Director), National Academy of Elder Law Attorneys (Member and State Director).

A native of Bismarck, North Dakota, Theresa Kellington graduated from San Diego State University in 1989 with a degree in Criminal Justice Administration. Theresa continued on to the University of the Pacific – McGeorge School of Law, where she graduated with honors in 1992, passing the CA State Bar exam the first time. Upon graduation from law school, Theresa joined a law firm in California, where she opened a civil litigation department and worked for 3 years. After the birth of her daughter in 1995, Theresa moved back to Bismarck to be closer to her family. Soon after, Theresa began working with Pearce Durick and American Legal Services. In 2012, Theresa joined Dan Oster, and together they established Kellington & Oster, P.C. Theresa loves family involved cases, business planning, and estate planning. She states, “Working with family law can be stressful, but I love to feel like I’m doing something right.” As a pro bono attorney of the year in North Dakota, Theresa hopes to become a Judge in the future.