Johnson, Duffie, Swewart & Weidner - Law
Always a Step Ahead



Rosemarie Gavin - CasnerRosemarie Gavin - Casner


Ms. Gavin-Casner focuses her practice on estate planning and administration, elder law, business law, real estate and municipal law. She is a member of the Cumberland County, Dauphin County, and Pennsylvania Bar Associations.

Ms. Gavin-Casner brings over 30 years of experience in business and financial management consulting for small and large businesses to her role at Johnson Duffie. She continues to focus on understanding the goals of the client and finding the right solution for a positive outcome. In addition to assisting business clients achieve their goals and objectives, Ms. Gavin-Casner provides individual clients with the personalized service and assistance necessary for families in transition. She holds herself to the highest standards with the goal of developing long term relationships with clients.

She began her career in information technology, handling the management, design and development of custom application software for defense, manufacturing and distribution, laboratory testing, and financial systems. Clients included the U.S. Navy, General Electric, Sallie Mae, Capital Blue Cross, Pennsylvania Department of Transportation, and Snyder's of Hanover. Extensive experience in business and technology led Rosemarie to consulting opportunities, where she specialized in providing financial, administrative, marketing, and computer services for area funeral homes.

Ms. Gavin-Casner attended law school to better understand the laws' implications on business, technology, our community, and our personal lives. In addition, during law school she completed a Judicial Externship with the Honorable Sylvia H. Rambo in the U.S. District Court for the Middle District of Pennsylvania, interned with the Governor's office of General Counsel, working at the Pennsylvania Department of Environmental Protection, and worked with MidPenn Legal Services.

Ms. Gavin-Casner's favorite season of the year is winter. She also serves as a ski instructor at Roundtop Mountain Resort and has worked with Special Olympics athletes. She loves sharing her passion for the sport with young athletes and connecting with people through skiing.

Areas of Practice:

Estate Planning; Estate Administration; Elder Law; Business Law; Municipal Law


J.D., cum laude, Penn State University, The Dickinson School of Law, 2016, Woolsack Honor Society
M.B.A., Business Administration, Penn State University, Harrisburg, Pennsylvania, 1987
B.S., Business Administration, La Salle University, Philadelphia, Pennsylvania, 1980