Domhnall Ó’Catháin (Donny) is a named partner in the Personal Injury Department of Lesnevich, Marzano-Lesnevich, O’Cathain & O’Cathain, LLC. Donny represents people who were personally injured as the result of the negligence of others, and families who have lost a loved one as the result of the negligence or malpractice of others. He handles personal injury, wrongful death and medical malpractice cases throughout New Jersey and New York.

Recognized as a Rising Star by Super Lawyers in New Jersey and New York every year since 2013, Donny is among only a handful of attorneys who have achieved this dual distinction.

Donny is originally from Ballincollig, County Cork, Ireland, and received his Bachelor of Civil Law from the University College Cork, Ireland, in 2000. In the United States, Donny graduated from Fordham University School of Law, where he was awarded an LLM in 2005, and from Rutgers University Law School, where he received his J.D. in the Foreign Lawyers Program in 2010.

Donny is the past President of the Irish American Bar Association of New York, and a current member of the Brehon Law Society, the New Jersey State Bar Association, the New Jersey Association of Justice, the New York State Trial Lawyers Association and the Irish American Bar Association of New Jersey. He has previously mentored legal students from Ireland.

Donny previously practiced at one of the most highly respected medical malpractice defense firms in New York. Since 2008 he has worked with this firm’s founding partner, Walter Lesnevich, recovering millions of dollars for their clients who are the victims of the negligence of others. He contributes regularly to the firm’s personal injury blog, Lawyer In Your Corner.

Donny has secured millions of dollars for his clients, including seven-figure settlements in medical malpractice cases, and six-figure settlements in trucking and car accident cases. His clients range from newborn babies in intensive care units to elderly folks who have been rear-ended by other cars. He tries cases to verdict, and fights the insurance companies to make an offer that meets the needs of his clients.

Donny is licensed to practice law in New Jersey and New York, and before the New Jersey Federal Court and both the Southern and Eastern Districts of New York. He is also fluent in Irish.

He resides in Hillsdale, New Jersey, with his wife and children.


The Super Lawyers list is issued by Thomson Reuters. A description of the selection methodology can be found at No aspect of this advertisement has been approved by the Supreme Court of New Jersey.