Gwyn Lewis

James O’Shaughnessy focuses his practice on the representation of public school districts, school boards, and other educational institutions, including charter schools and private schools. As leader of the firm’s New Hampshire school law group, Jim’s practice involves the full spectrum of school law matters, including board representation and governance, school district and SAU organization and budgets, cooperative and regional school district issues, school district annual ...

Mark represents individuals and their claims and disputes relative to bodily injury claims, workers’ compensation claims, insurance coverage disputes, and social security disability claims. Mark’s experience in bodily injury claims includes motor vehicle accidents, general tort claims, product’s liability claims and medical malpractice claims.

Marrielle B. Van Rossum is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law and Medical Malpractice Law - Defendants. Marrielle B., who practices law in Manchester, New Hampshire, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marrielle B. is held by other top lawyers in the same geographic and legal practice area.

Margaret E. Probish is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Finance Law and Real Estate Law. Margaret E., who practices law in Manchester, New Hampshire, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Margaret E. is held by other top lawyers in the same geographic and legal practice area.

Charlie’s practice is in the areas of real estate, commercial lending and loan workout for lenders. His experience includes real estate development, leasing, condominium issues, bankruptcy and perfecting and enforcing commercial loan documents. Charlie’s clients range from real estate developers to banks, nonprofits and municipalities.

Keriann Roman is a top attorney recognized by Best Lawyers in the practice area(s) of Land Use and Zoning Law and Litigation - Municipal. Keriann, who practices law in Manchester, New Hampshire, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Keriann is held by other top lawyers in the same geographic and legal practice area.

Jim is a senior member of the litigation department and serves as the firm’s general counsel. He has successfully handled litigated cases in state and federal court in New Hampshire and in neighboring jurisdictions for over 35 years. Over time, he has focused on matters involving commercial disputes, professional negligence, product liability, toxic torts, real estate and insurance coverage. In addition, Jim has been active throughout his career in promoting lawyer continuing legal educ...

Since joining Nixon Peabody almost 20 years ago, Phil has had the pleasure of advising investors, middle market private companies, large public companies, entrepreneurs and C-level executives in many different kinds of corporate transactions, all over North America, Europe, Asia and Africa. Phil was born in Southern Africa and finished his secondary education in the United States. His love of family, travel, outdoor adventure and community permeates everything he does. Phil has been described...

Nathan Warecki is an associate in Nixon Peabody’s Complex Commercial Disputes group, and teams with attorneys and other legal professionals on a wide variety of matters, including commercial litigation, class actions, non-competes and trade secrets, business disputes, and immigration. Prior to joining the firm, he worked for a regional law firm in Manchester, New Hampshire, on general litigation and immigration matters. In law school, he interned with the Honorable Joseph N. Laplante of...

Kirsten Wilson is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: General Practice. Kirsten, who practices law in Portsmouth, New Hampshire, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kirsten is held by other top lawyers in the same geographic and legal practice area.