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Margaret Sinclair-Alexander (neé Margaret Alexander) was a Human female born in Jamaica on Earth in the mid-23rd century.

Early Career

As a lieutenant in Starfleet, Margaret Alexander (known familiarly as "Madge") served for one year aboard the USS Enterprise under Captain James T. Kirk in the 2260s. Her performance aboard the Enterprise was such that she earned a field promotion, and transferred to the USS Firenze to serve as its second officer.

Later, she was promoted to the rank of Commander, and was assigned as executive officer of the USS Freedom. She then was promoted to Captain and took command of the Freedom, a position she held until that ship was decommissioned. (TOS - Crucible novel: The Star to Every Wandering)


Margaret Alexander in command of the Saratoga

By 2285, she commanded the Miranda-class USS Saratoga. In 2286, Sinclair's Saratoga was assigned for a key mission to the Romulan Neutral Zone, carrying Captain Styles who was sent by Starfleet to relieve James T. Kirk from command of the USS Excelsior. (TOS - Crucible novel: The Star to Every Wandering, TOS comic: "The Apocalypse Scenario!")

Later that year, she took Saratoga on a patrol of the area near the Zone, where they encountered, and were disabled by the Whale Probe. (TOS movie, novelization & comic adaptation: Star Trek IV: The Voyage Home)

She was still commanding the Saratoga in 2289 when it was to bring Sarek to a Klingon-Federation peace conference, but was substituted for by the USS Excelsior. (ST novel: Excelsior: Forged in Fire)


By 2293, Sinclair-Alexander had risen to the rank of Admiral, assigned to Starfleet Headquarters. That year, she persuaded Kirk to take part in the launch ceremonies for the new USS Enterprise-B. (TOS - Crucible novel: The Star to Every Wandering)

After Kirk was apparently killed aboard that vessel, she spoke his memorial service in the grounds of Starfleet Academy, where she recalled the time she spent serving with Kirk and all she had learned from him. (TOS - Crucible novel: The Fire and the Rose)

In the year 2300, following the deployment of an illegal isolytic subspace weapon against civilians within the Da'Kel system of the Klingon Empire by Kriosian terrorists, Sinclair-Alexander was instrumental in the involvement of Starfleet Intelligence operatives Darius Miller and Elias Vaughn during the investigation, which ultimately led to the unmasking of several conspirators in the Gorkon assassination of 2293. (TOS novel: Cast No Shadow)

By 2311, she had risen to the position of Commander-in-Chief of Starfleet. That year, she approved Captain John Harriman's plan to capture the Romulan flagship Tomed, and also recruited both Drysi Gravenor and Los Tirasol Mentir to assist with the mission. (TLE novel: Serpents Among the Ruins)


Margaret Alexander met Cynthia Sinclair sometime after leaving command of the Saratoga. The two were married in 2292, and Alexander changed her surname to Sinclair-Alexander. (TOS - Crucible novel: The Star to Every Wandering)

The captain of the Saratoga was unnamed in the film. The surname "Alexander" was established in the Star Trek IV: The Voyage Home novelization. Serpents author David R. George III added her first and married names, in tribute to the actress who played the role, Madge Sinclair.
USS Enterprise (NCC-1701) miscellaneous personnel
original configuration crew (2240s-2260s) AdamsAdamskiAgbaduduM. AlexanderAlfordAlnasAndersonArbeeBabbBartholomewBatesBeaumontBellBemisBoringBrennerM. BrennerBrettonBriggsBrizziCableCalderCarterCastanuelaChangChaseChenChestertonClaireCordellCrandallDashiellDeanDemickDentonDevicoDickEckertElliottEllisFerriterForbesFosterFrietasFritzFroodGabrielGarveyGorshimGroganHansenHornickHoskinsHuntHurchallaIxJacksonU. JacksonJakorskiJeffreysJinzJohnsonJonesJordanKarrasKentKernbaumK.A.H. KimT. KimKingcomeKlecknerKradKukarKulessaLancerLaneLangelyLarayaLatrobeLewterLivingerLoiLongstreetLowndsMakowskiMancusoMargolisMartinMatsonMaudieMcNairMedinaM'GuraMichalukMichelliMillerMontalvo-LagosMoodyM'turrNikonNumber FiveO'NeilOrgillPadmaParkParkinsonPaynePinedaPiperPlummerPoolPrescottRaegerRauReismanRemingtonReyesRichardsRosenSardaSawchukSellersShawShemryShumSikhSmithB. SmithH. SmithSmithySneadSolinskiSparrowEric StaaltenburgSteinStillwellStoltzfusSusanTanakaTaylorJ. TaylorThomkinsTi-ChenT'KhulnTomlinsonTrawleyUyloanVuongWagnerWardoffWashingtonWebbWilliamsWillisXanaXiaoYangYork Starfleet emblem. USS Enterprise assignment insignia.
refit configuration crew (2270s-2280s) AbernathyAhrensAledortAustinBearclawBischoffBrandBrassardCanfieldChenClaremontCoffeyConroyCroyDeckertDennehyEisenbergFederFosterFredericksIbsenJacobsKellyKhalifaKi'ki're'ti'keKonomKorrenKyLangsamLihwaLittLondonLucyDiane MaassDonald MaassMalksonMatheeMatshushitaMeierMeshavMiñambrésMorrisMullerNortonOranjeboomPaulRemnerRogersRotslerSaavikTrenjanVistiWelkinZaandZh'Ral UFP emblem. USS Enterprise assignment insignia.
see also: administrative personnelcommunications personnelengineering personnelmedical personnelpilots & flight control personnelsecurity & tactical personnelsciences personnelsenior staff • unnamed (2240s and 2250s2260s2270s and 2280s)
USS Saratoga personnel
USS Saratoga (NCC-1887) AlexanderChitirih Ra-DreiiSgeulaichesThahai Emblem of the United Federation of Planets. Seal of the Federation Starfleet.
USS Saratoga (NCC-31911) BarnesDelaneyDoranGarciaGraalLafferLopezJ. ProudstarB.L. SiskoJ. SiskoStorilTamamotaThornHranok Zar
USS Saratoga-A Vincenzo
Commanders-in-Chief of the Federation Starfleet
Emblem of the United Federation of Planets icon image. Chinua AbuteVoyseyBull BuchinskyStephen TurnerJohn "Blackjack" HarrimanWilliam SmillieAndrovar DrakeMargaret Sinclair-AlexanderPavel ChekovTaela ShanthiEdward JellicoLeonard James AkaarVictor BordsonKirsten ClancyJorel QuinnCharles Vance Seal of the Federation Starfleet icon image.

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