In the holosuite program Julian Bashir, Secret Agent, Patrick Merriweather was the alias used by Julian Bashir while attempting to conceal his "true" identity as a secret agent.
In the ruse, Merriweather claimed to be one of the leading geologists in the world. During his visit to Club Ingenue in Paris, he claimed to be traveling with his wife, Anastasia, and his friend, Mr. Garak. Upon meeting Mr. Duchamps, Merriweather proved to be quite skilled at the game baccarat. (DS9: "Our Man Bashir")