Ellen Hayat was a security guard serving aboard the USS Hood in 2371. (VOY - The Brave and the Bold, Book Two novella: The Third Artifact) She died sometime prior to 2376, presumably during the course of the Dominion War. (TNG - The Brave and the Bold, Book Two novella: The Final Artifact)

USS Hood personnel
USS Hood (NCC-1703)	Ankee • J. Banks • G. Barton • K. Chin • L. Craig • K. Dodge • D'Uberville • Ellis • Kyle • J. Martinez • Morax • S. M'Ress • Oxley • A. Paultic • H. Revere • M. Rousseau • Simmons • Stuart • Tavi • G. Vedra • Umba • P. Yudrin
USS Hood (NCC-42296)	Abrams • Brian • Buonfiglio • Consuela • T. Czierniewski • M. Dayrit • R. DeSoto • R. Green • E. Hayat • B. Hsu • J. Kojima • G. La Forge • LedBetter • Flad Orzon • W.T. Riker • Tuvok • D. Voyskunsky • L. Weiss