John A. "Jack" Guernsey

Stewart Eisenberg has earned a reputation of unparalleled success and achievement as one of the region's most accomplished trial lawyers. He has been named as one of the Best Lawyers in America by the definitive guide to legal excellence in the United States; been voted a Pennsylvania Super Lawyer since the inception of the award; been named by LawDragon Magazine as one the nation’s Best Plaintiff’s lawyers; been honored by the American Trial Lawyers Association as one of the stat...

Margaret A. Joy is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Margaret A., who practices law in West Chester, Pennsylvania, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Margaret A. is held by other top lawyers in the same geographic and legal practice area.

George has been advising management in labor and employment matters for more than 20 years, with a focus on traditional labor matters such as collective bargaining and union-management relations, employment litigation, and wage and hour advice and litigation in both the public and private sectors.George represents businesses, municipalities, nonprofits, and educational institutions in all aspects of labor and employment law, including federal and state court trial proceedings involving equal ...

For over forty-four years, Marc Steinberg has been practicing law, and for the past thirty-eight years as the Managing Partner of the Lansdale, Montgomery County, Pennsylvania law firm of Rubin, Glickman, Steinberg and Gifford, P.C. After graduation from the Pennsylvania State University in 1970, Mr. Steinberg received his law degree from Temple University School of Law in 1973. After a one year clerkship in the Montgomery County Court of Common Pleas, Mr. Steinberg served a two year term as ...

Paul R. McIntyre is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Paul R., who practices law in Philadelphia, Pennsylvania, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Paul R. is held by other top lawyers in the same geographic and legal practice area.

Joshua D. Cohen is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Joshua D., who practices law in Philadelphia, Pennsylvania, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joshua D. is held by other top lawyers in the same geographic and legal practice area.

Greg Mast specializes in complex insurance coverage and business litigation for domestic and international insurers. Having spent time as both a law clerk and in-house counsel, Greg has earned a reputation as a respected advocate inside and outside of the courtroom. In addition to his nationwide practice, Greg also heads up Fields Howell’s Philadelphia office. As a foundation for his legal practice, Greg spent two years working in the U.S. House of Representatives, where his legislative...

Kayci D. Petenko is a top attorney recognized by Best Lawyers in the practice area(s) of Nonprofit / Charities Law. Kayci D., who practices law in Philadelphia, Pennsylvania, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kayci D. is held by other top lawyers in the same geographic and legal practice area.

Named “Female Business Leader of the Year” by the Chester County Chamber of Business and Industry, Sandra L. Knapp is a member of the Business Department at Gawthrop Greenwood and practices in the fields of Business Law, Commercial Transactions, Admiralty/Maritime Law, Real Estate Law, and Banking and Finance. She represents clients in a broad range of transactional and general corporate matters, including asset-based lending transactions, mergers and acquisitions, marine finance ...

David J. Colleran is a top attorney recognized by Best Lawyers in the practice area(s) of Medical Malpractice Law - Plaintiffs, Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. David J., who practices law in Philadelphia, Pennsylvania, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David J. is held by other top lawyers in the same geographic and legal practice area.