Lance Cartwright

Fleet Admiral Cartwright was a high ranking Starfleet officer in the late 23rd century. In 2286, Cartwright oversaw Starfleet operations during the Cetacean Probe crisis on Earth. (TOS movie: Star Trek IV: The Voyage Home)

In 2293, Cartwright strongly opposed the Federation's plans to negotiate a peace treaty with the Klingon Empire and became part of a conspiracy to prevent this. He was exposed by Captain James T. Kirk and crew of the USS Enterprise-A, and was arrested at Khitomer. (TOS movie: Star Trek VI: The Undiscovered Country)