Roy Heise

Founding Partner

Roy is the senior partner having over 40 years in the practice of law. Roy concentrates his practice in the area of wills, estate probate, estate planning and trusts. Roy served over 25 years as the Village of Brockport Village Attorney. Roy is a military veteran and a member of the Brockport VFW. He is an avid golfer and a well respected member of the Brockport and Hamlin communities.

Kevin G. Johnson


Kevin moved to Brockport as a young child, and has lived there ever since. He currently resides there with his wife Marne and his three sons, Kevin Jr., Grant and Reagan, and a daughter, Maggie. Kevin graduated from St. John Fisher College in 2002 with degrees in political science and history. After working for several years following college, Kevin then attended the University of Buffalo Law School, graduating in 2008. After graduation he was admitted to the New York State Bar in February 2009.

Mark H. Klafehn (Deceased)

Founding Partner

Mr. Mark Klafehn retired from the full time practice of law in 2006. Mr. Klafehn practiced law for more than 50 years and concentrated his  practice in the areas of real estate, wills and probate, family law and criminal defense. Mr. Klafehn was a well respected member of the Brockport community and continued to be active with the firm until his passing in 2011.


Debra Kluth

Debbie has been working in the legal field since graduating from Hilton High School. She brings with her many years of experience in litigation, criminal law, real estate and estate work.

Constance H. Hertzlin

Connie currently handles real estate transactions at Klafehn, Heise & Johnson P.L.L.C. She enjoys working closely with attorneys, clients and lenders to facilitate timely and successful closings, while also providing excellent service with a personal touch. Connie has over 30 years of secretarial experience in various business settings and has an AAS degree in secretarial science from Monroe Community College.

Deborah Stroup

Debbie handles real estate closings and estates at Klafehn Heise & Johnson PLLC.  Debbie has worked in the legal field for 21 years as a real estate paralegal, and she also has experience in preparing and reviewing income taxes.

Heather Brightly

Heather is part of the real estate team at Klafehn, Heise and Johnson PLLC. Heather graduated from SUNY Brockport with a Bachelor of Science in Business Administration, with a Major in Finance and Minor in Economics.  She worked at Paychex for 7 ½ years in various roles, gaining considerable customer service experience along the way.  She is glad to be working in a small-town workplace, serving the legal needs of friends, family and neighbors.

Olenka N. Masny, J.D.

Olenka found her passion for the law in 2012 when she attended Monroe Community College with a focus in political science.  She then attended and graduated from St. John Fisher College in 2016 with degrees in political science and legal studies.  Following graduation, Olenka attended the University at Buffalo School of Law, graduating in 2019.  Olenka is currently studying for the bar exam.

Legal Assistants

Laurie Koelle

Laurie is a trained X-Ray Technician, but decided to change careers, now working as our administrative assistant. She enjoys working directly with clients and keeps the firm's busy phones and schedule in order.

Marne C. Johnson

Marne works closely with the attorneys at Klafehn, Heise & Johnson P.L.L.C. in the drafting and preparation of estate planning and real estate documents. She lives in the village of Brockport with her husband, Kevin, and three sons, Kevin Jr., Grant, and Reagan, and a daughter, Maggie. She is blessed to be able to stay at home to care for them. Marne enjoys the work she does for the firm because she is able to do it and still be home with her family.

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