Septim Dynasty The Septim Dynasty refers to the bloodline of Emperors and Empresses , beginning with Tiber Septim . They were the first ruling family of the Third Empire , ruling it for the whole duration of the Third Era . The majority of these rulers are considered to be Imperial s , unless otherwise stated . Its end was also the end of the Third Era . Tiber Septim ( 3E 1 – 3E 38 ) . Tiber Septim was the founder of the Septim Dynasty . It was he who conquered Tamriel as the General of Cuhlecain . When Cuhlecain died at the hands of an unknown assassin ( some say of Tiber himself ) , he became Emperor , declaring the beginning of the Third Era at his coronation . As well as initiating governmental reforms following his conquests , Tiber is also credited with the revival of the cult of the One , an ancient Nordic belief , and building a temple to it in the Imperial City . Tiber ruled until 3E 38 , when he was succeeded by his grandson , Pelagius Septim . Pelagius Septim I ( 3E 38 – 3E 41 ) . Pelagius Septim I ( Born ? ? - 3E 41 ) was the second ruler of the Septim Dynasty and grandson to Tiber Septim . Pelagius Septim had a short rule when compared with his grandfather . He was assassinated by the Dark Brotherhood in the third year of his reign when he knelt at the Temple of the One in the Imperial City . Kintyra Septim ( 3E 41 – 3E 48 ) . Kintyra Septim ( Born ? ? - 3E 48 ) was the third monarch and first empress to rule Tamriel . Kintyra was Pelagius ' first cousin , and daughter of Tiber Septim ' s brother , Agnorith . A former Queen of Silvenar , her reign was blessed with " prosperity and good harvests , and she herself was an avid patroness of art , music , and dance " . Uriel Septim I ( 3E 48 – 3E 64 ) . Uriel Septim I ( Born ? ? - 3E 64 ) was the fourth Emperor of Tamriel . Uriel I succeeded his mother , Kintyra Septim . He would be the first of seven Uriels to command the throne during the Third Era . Throughout his rule , Uriel I promoted lawfulness and furthered the establishment of Imperial organizations , including the Fighters Guild and Mages Guild . Upon his death , he was succeeded by his son , also Uriel . Uriel Septim II ( 3E 64 – 3E 82 ) . Uriel Septim II ( Born ? ? - 3E 82 ) was the fifth ruler of the Septim Dynasty . In 3E 64 , Uriel Septim II succeeded his father . His rule was " cursed with blights , plagues and insurrections " . Pelagius Septim II ( 3E 82 – 3E 99 ) . Pelagius Septim II ( Born ? ? - 3E 99 ) was the sixth ruler of the Septim Dynasty . Pelagius ascended the throne when his father died , and inherited a massive debt from his father ' s poor financial and judicial management . To recover the debt , he dismissed the Elder Council , and only allowed those able to pay great sums of money to resume their seats . He encouraged his vassals to do likewise , and during his 17 - year reign , Tamriel returned to prosperity . He was succeeded by his son , Antiochus . Antiochus Septim ( 3E 99 – 3E 119 ) . Antiochus Septim ( Born ? ? - 3E 119 ) was the seventh monarch to rule the Septim Dynasty . Antiochus was one of the more flamboyant members of the Septim Family . Caring more for his mistresses and his numerous wives than the running of the empire , his reign was rife with civil war , even more so than his grandfather , Uriel Septim II . Of particular significance was the War of the Isle in 3E 110 , twelve years after he assumed the throne , in which Pyandonea was only barely defeated by Antiochus ' and the forces of the Summerset Isles with the help of the Psijic Order . Kintyra Septim II ( 3E 119 – 3E 121 ) . Kintyra Septim II ( Dates disputed by differing sources ) was the eighth monarch of the Septim Dynasty . Kintyra had the most unhappy rule of all of the Septim Dynasty . First inheriting the throne at fifteen years of age , her cousin , Uriel Septim III , son of Queen Potema , imprisoned her , and the War of the Red Diamond begun . Uriel Septim III ( 3E 121 – 3E 127 ) . Uriel Septim III , also known as Uriel Mantiarco ( Born 3E 97 - 3E 127 ) , was the ninth ruler of the Septim Dynasty . Uriel Septim became Emperor after starting a coup against his cousin , Kintyra Septim II . He was more accurately known as Uriel Mantiarco , and the tradition of being renamed " Septim " upon becoming ruler followed him . For the entirety of the six years that he ruled , the War of the Red Diamond was being fought by himself and his cousins . Pelagius Septim II ' s succeeding cousins , Potema Septim ( his mother ) , Cephorus Septim , and Magnus Septim , all fought against one another for control . ( For more information , see War of the Red Diamond ) . Eventually , Uriel Septim lost and was replaced by Cephorus Septim after the Battle of Ichidag . Cephorus Septim ( 3E 127 – 3E 140 ) . Cephorus Septim ( born ? ? - 3E 140 ) was the tenth ruler of the Septim Dynasty . The majority of his thirteen - year reign was marked by the War of the Red Diamond against his sister Potema Septim . Cephorus survived only three years longer than Potema herself . Having no children himself , he was replaced by his brother when he died in a horse accident . Magnus Septim ( 3E 140 – 3E 145 ) . Magnus Septim ( born ? ? - 3E 145 ) was the eleventh ruler of the Septim dynasty . Magnus ascended to the throne when his brother , Cephorus I , died in 3E 140 . Already an elderly man by the time he became emperor , much of his time was spent punishing the traitorous kings during the War of the Red Diamond . His son , Pelagius , then King of Solitude , succeeded him as ruler . Pelagius Septim III ( 3E 145 – 3E 153 ) . Pelagius Septim III ( born 3E 119 - 3E 153 ) was the twelfth member of the Septim Dynasty . Perhaps better known as " Pelagius the Mad " , he was proclaimed emperor in 3E 145 . His eccentricities were noted by the court " almost from the start " . Katariah Septim ( 3E 154 – 3E 200 ) . Katariah Septim ( Born ? ? - 3E 200 ) was the thirteenth ruler of the Septim Dynasty . Katariah Septim was initially appointed as Regent of Tamriel , whilst her husband , Pelagius , was institutionalized . A Dunmer by birth , some people consider her rule the " true mark of the decline of the Septim Empire . " However , her forty - six year reign is one of the most celebrated in Imperial history , traveling often and " repairing much of the damage that previous Emperor ' s broken alliances and bungled diplomacy created . " Cassynder Septim ( 3E 200 – 3E 202 ) . Cassynder Septim ( Born 3E 147 - 153 - 3E 202 ) was the fourteenth ruler of the Septim Dynasty . He inherited the throne on the death of his mother , already middle - aged and due to poor health . He left the care of High Rock province to his half - brother Uriel Lariat , though , as the only true blood relation of Pelagius Septim III , and thus Tiber Septim , he was pressed into accepting the throne . He died after only two years of rule . His brother Uriel Lariat succeeded him and was crowned Uriel Septim IV . Uriel Septim IV ( 3E 202 – 3E 247 ) . Uriel Septim IV , also Uriel Lariat ( Born ? ? - 3E 247 ) , was the fifteenth monarch to rule Tamriel . Uriel Lariat was the son of Katariah and her consort Gallivere Lariat ( after Pelagius Septim III ' s death ) . Legally , Uriel was a Septim : Cassynder had adopted him into the royal family when he was King of Wayrest . Many people considered him to be a bastard child , however , and his forty - three year reign was a " hotbed of sedition . " There was little that Uriel Septim IV was able to achieve during his rule . During the rule of his mother , Katariah and half brother Cassynder , the Elder Council had assumed a great deal of power . Due to the moneymaking methods of Pelagius Septim II , it consisted of the wealthiest ( and thus the most powerful ) people in Tamriel , and he was unable to defeat them . The final victory of the Elder Council over Uriel was to deny his son , Andorak Septim , from becoming ruler . Cephorus Septim II ( 3E 247 – 3E 268 ) . Cephorus Septim II ( Born ? ? - 3E 268 ) was the sixteenth monarch of the Empire of Tamriel . He was voted into power by the Elder Council in 3E 247 , weeks after the death of his cousin and predecessor , Uriel Septim IV . Two significant events occurred during his reign . The first of these was a war with Andorak Septim , which was only resolved after giving Andorak ' s rulers the land of Shornhelm , where they still rule today . The more significant threat , however , was the Camoran Usurper . His ultimate defeat had little to do with the Empire , however , as he was already significantly weakened by his civil war with Andorak . ( For full details , see Camoran Usurper . When Cephorus died in 3E 268 , he was succeeded by his son , Uriel Septim V . Uriel Septim V ( 3E 268 – 3E 290 ) . Uriel Septim V ( Born ? ? - 3E 290 ) was the seventeenth ruler of the Empire of Tamriel . He inherited the throne from his father , Cephorus Septim II , in 3E 268 . His reign was marked by several ambitious conquests , the last of which was to the continent of Akavir . He was regarded as the greatest warrior Emperor since his ancestor Tiber Septim . When he was away campaigning , the Elder Council continued to rule in his stead . During his rule , he conquered several kingdoms , including Rosacrea ( 271 ) , Cathnoquey ( 276 ) , Yneslea , ( 279 ) and Esroniet in 284 . He then proceeded on an ambitious plan to invade the continent of Akavir , which ended disastrously . Uriel Septim VI ( 3E 290 – 3E 320 ) . Uriel Septim VI ( 3E 285 - 3E 317 ) was the eighteenth ruler of the Empire of Tamriel . His father , Uriel Septim V , died when he was just five years of age . As a result , his mother , Thonica , the Imperial consort , was named Regency until he " reached his majority , " with the Elder Council retaining the " real " power . The Elder Council denied him the power of Emperor until he was 22 years of age , but he had been slowly assuming duties for some time before this . Even then , the only real power the Elder Council allowed him was the power of veto . However , he used this power effectively , and used the " defunct spy networks and guard units to bully and coerce difficult members of the council . " By 3E 313 , he truly did rule Tamriel . When he fell off of a horse , his sister Morihatha Septim , who had been instrumental in helping to influence the Elder Council , was crowned as Empress . Morihatha Septim ( 3E 320 – 3E 339 ) . Morihatha Septim ( 3E 288 - 3E 339 ) was the nineteenth ruler of the Empire of Tamriel . Morihatha , the daughter of Uriel Septim V , finished the job her brother had started . She brought the Arch - Mage of Skyrim to the Imperial City , and created the Second Imperial Battlemage since the days of Tiber Septim . She then endeavored to undo quell riots in the Provinces , as the " open revolutions and civil wars had raged unchallenged since the days of her grandfather Cephorus Septim II . " Her campaigns were remarkably successful , but carefully coordinated so as not to overextend herself . The Elder Council was outraged by the slow pace of these , and she was assassinated in 3E 339 . the Argonian councilman Thoricles Romus , reportedly outraged at her refusal to sent troops to bolster the Black Marsh , was tried and executed for this crime . Another noteworthy aspect of her reign was the creation of the Pocket Guide to the Empire , Second Edition . Pelagius Septim IV ( 3E 339 – 3E 368 ) . Pelagius Septim IV ( 3E 294 - 3E 368 ) was the twentieth Emperor of Tamriel . He succeeded his aunt , the Empress Morihatha , who was assassinated in 3E 339 . Pelagius ' mother , Eloisa , had died four years prior to his ascension . Pelagius continued the work his aunt had done , and slowly brought " back under his wing the radical and refractory kingdoms , duchies , and baronies of the Empire . " Whilst not as successful as his aunt , he was nevertheless somewhat successful , and , " after a notably stable and prosperous 29 year reign , Tamriel was closer to unity than it had been since the days of Uriel Septim I . Uriel Septim VII ( 3E 368 – 3E 433 ) . Uriel Septim VII ( 3E 346 - 3E 433 ) was the twenty - first ruler of Tamriel . Uriel VII was the son of Pelagius Septim IV . Uriel came to power in 3E 368 and reigned for several decades before his eventual death as an aged monarch in 3E 433 . He had the " diligence of his great - aunt Morihatha , the political skill of his great - uncle Uriel Septim VI , and the military prowess of his great - grandfather Uriel V . " In 3E 389 , however , he was betrayed by his Battlemage , Jagar Tharn , who held him prisoner for 10 years until the Eternal Champion freed him . Since his release , he " worked diligently to renew the battles that would reunite Tamriel . " Evidence of this can be seen by his involvement in the Morrowind Prophecies , where he introduced the Nerevarine to Morrowind . Ultimately , he was killed by assassins from the Mythic Dawn whilst attempting escape in the Imperial City , but was succeeded by Martin Septim . Martin Septim ( 3E 433 ) . Martin Septim ( 3E ? ? ? - 3E 433 ) was the illegitimate son of Emperor Uriel Septim VII . Before 3E 433 , he never knew his parents , and lived much of his life as a priest . However , events during the Oblivion Crisis caused him to become Emperor , in order to stop the threat . His death signaled the end of the Septim Dynasty , as well as the end of the Third Era .