William P. Masefield was a human male Starfleet officer, born in 2240, who served during the 23rd century. William Masefield served in almost every possible capacity in Starfleet, including four years aboard the USS Lexington, beginning just after Commodore Robert Wesley left command. During Masefield's time of service, he has received several minor decorations for accomplishing difficult missions. Then Lt. Masefield once served a three-year term as Helmsman with then Lt. Cmdr. Niccomachi, but they did not kept close contact since.