Megan A. Pierce, 25, of 219 Goodale St., was charged by Watertown police Wednesday with false personation and unlawful possession of marijuana.
Police allege that she provided them with the name of Megan P. LaFave to prevent them from knowing her true identity because she believed there was a warrant out for her arrest. Police also said there was a small amount of marijuana found in plain view on a coffee table at her residence.
She is due to answer the charges in City Court.