The Right Team.
Our lawyers are respected, experienced and responsive, with a proven track record of success.
We work tirelessly to obtain the best possible result for each client.
Learn more about our lawyers below.
DOMINIC LAMB
dominic@lambandobrien.com | 613-560-5982
Called to the Ontario bar in 2001, Dominic Lamb is a Certified Specialist in Criminal Law. Dominic was a sole practitioner with an exclusive criminal defence focus for many years before joining Michael Edelson’s office in 2009. In 2019, he co-founded Lamb & O’Brien, a boutique law firm specializing in criminal and regulatory law.
Dominic’s practice covers all manner of cases that come before the criminal courts, from mischief to murder. He also maintains an active regulatory law practice. Dominic has represented clients at every level of Court in Ontario, the Federal Court of Canada and at public inquiries, Coroner’s inquests and before administrative tribunals. Dominic is well known as a successful trial lawyer, having run hundreds of trials during his career.
DOMINIC LAMB
dominic@lambandobrien.com
613-560-5982
Called to the Ontario bar in 2001, Dominic Lamb is a Certified Specialist in Criminal Law. Dominic was a sole practitioner with an exclusive criminal defence focus for many years before joining Michael Edelson’s office in 2009. In 2019, he co-founded Lamb & O’Brien, a boutique law firm specializing in criminal and regulatory law.
MEGHAN K. O’BRIEN
meghan@lambandobrien.com | 613-560-5982
Called to the Ontario bar in 2001, Meghan O’Brien spent most of her early career in the Ottawa office of Gowling WLG. During that time, Meghan’s litigation practice focused primarily on professional liability and discipline, in particular in the area of medical defence. Meghan also has significant experience in the area of privacy compliance and advocacy in the healthcare sector, including the management of privacy and data breaches.
When Meghan opened her own law firm in 2016, she expanded her practice to include criminal law, which was the focus of her LL.M. studies at the University of Cambridge. Meghan is currently the Managing Principal of Lamb & O’Brien, a boutique law firm specializing in criminal and regulatory law that she co-founded in 2019.
MEGHAN K. O’BRIEN
meghan@lambandobrien.com
613-560-5982
Called to the Ontario bar in 2001, Meghan O’Brien spent most of her early career in the Ottawa office of Gowling WLG. During that time, Meghan’s litigation practice focused primarily on professional liability and discipline, in particular in the area of medical defence. Meghan also has significant experience in the area of privacy compliance and advocacy in the healthcare sector, including the management of privacy and data breaches.
JONATHAN NADLER, Associate
jonathan@lambandobrien.com | 613-560-5982
Called to the Ontario bar in 2017, Jon Nadler practises in the areas of criminal defence and regulatory law. He joined Lamb & O’Brien in 2019.
Jon has represented clients on a wide range of provincial and criminal offences before the Ontario Court of Justice and Superior Court of Justice.
Originally from Montreal, Jon practises in English and French. Away from the courtroom, Jon volunteers his time on important issues for the local defence bar and acts as junior executive for the Defence Counsel Association (DCAO).
JONATHAN NADLER, Associate
jonathan@lambandobrien.com
613-560-5982
Called to the Ontario bar in 2017, Jon Nadler practises in the areas of criminal defence and regulatory law. He joined Lamb & O’Brien in 2019.
Jon has represented clients on a wide range of provincial and criminal offences before the Ontario Court of Justice and Superior Court of Justice.
Originally from Montreal, Jon practises in English and French. Away from the courtroom, Jon volunteers his time on important issues for the local defence bar and acts as junior executive for both the Defence Counsel Association of Ottawa and the Child Protection Defence Association of Ottawa.
PEYMAN MAHMOUDIAN, Associate
peyman@lambandobrien.com | 613-560-5982
Peyman Mahmoudian practises in the areas of criminal defence and regulatory law in both Ontario and Quebec. He articled with Lamb & O’Brien, returning as an associate upon his call to the Ontario bar in 2022. Peyman is also an active member of the Quebec bar, having completed his stage with senior criminal counsel Louis Belleau in Montreal. Peyman is fluent in English, French and Farsi.
PEYMAN MAHMOUDIAN, Associate
peyman@lambandobrien.com
613-560-5982
Peyman Mahmoudian practises in the areas of criminal defence and regulatory law in both Ontario and Quebec. He articled with Lamb & O’Brien, returning as an associate upon his call to the Ontario bar in 2022. Peyman is also an active member of the Quebec bar, having completed his stage with senior criminal counsel Louis Belleau in Montreal. Peyman is fluent in English, French and Farsi.
SARAH POTHIER, Law Clerk/Auxiliaire juridique
sarah@lambandobrien.com | 613-560-5982
Sarah Pothier joined Lamb & O’Brien in 2019 after moving to Ontario from Montreal. Fluent in both English and French, Sarah is an experienced clerk coming from a large immigration firm in Montreal, where she focused primarily on criminal rehabilitation.
In addition to her law clerk duties, Sarah is also the initial point of contact for the firm’s clients and ensures the smooth operation of our day to day business.
SARAH POTHIER, Law Clerk/Auxiliaire juridique
sarah@lambandobrien.com
613-560-5982
Sarah Pothier joined Lamb & O’Brien after moving to Ontario from Montreal. Fluent in both English and French, Sarah is an experienced clerk coming from a large immigration firm in Montreal, where she focused primarily on criminal rehabilitation. Sarah also has significant experience with Record Suspension applications.
In addition to her law clerk duties, Sarah is also the initial point of contact for the firm’s clients and ensures the smooth operation of our day to day business.
BETINA LETELLIER DE ST JUST, Paralegal
betina@lambandobrien.com | 613-560-5982
Betina Letellier De St Just is an experienced paralegal, licensed by the Law Society of Ontario. Prior to joining Lamb & O’Brien in 2022, Betina practised primarily in the area of worker’s compensation law, having represented clients before various worker’s compensation boards and appeal tribunals across Canada. Betina has a degree in Criminology and Criminal Justice from Carleton University and has worked with both the RCMP and the Department of Justice.
In her current role at the firm, Betina actively manages and supports Mr. Lamb’s practice.
BETINA LETELLIER DE ST JUST, Paralegal
betina@lambandobrien.com
613-560-5982
Betina Letellier De St Just is an experienced paralegal, licensed by the Law Society of Ontario. Prior to joining Lamb & O’Brien in 2022, Betina practised primarily in the area of worker’s compensation law, having represented clients before various worker’s compensation boards and appeal tribunals across Canada. Betina has a degree in Criminology and Criminal Justice from Carleton University and has worked with both the RCMP and the Department of Justice.
In her current role at the firm, Betina actively manages and supports Mr. Lamb’s practice.
