<Table> <Tr> <Th_colspan="2"> Name </Th> <Th> Reign </Th> <Th> Comments </Th> </Tr> <Tr> <Td> </Td> <Td> Nikephoros I (Νικηφόρος Αʹ ὁ Λογοθέτης) </Td> <Td> 31 October 802--26 July 811 </Td> <Td> General Logothete (finance minister) under Irene, led initially successful campaigns against the Bulgars but was killed at the Battle of Pliska . </Td> </Tr> <Tr> <Td> </Td> <Td> Staurakios (Σταυράκιος) </Td> <Td> 26 July 811--2 October 811 </Td> <Td> Only son of Nikephoros I, crowned co-emperor in December 803 . Succeeded on his father's death; however, he had been heavily wounded at Pliska and left paralyzed . He was forced to resign, and retired to a monastery where he died soon after . </Td> </Tr> <Tr> <Td> </Td> <Td> Michael I Rangabe (Μιχαὴλ Αʹ Ῥαγγαβέ) </Td> <Td> 2 October 811--22 June 813 </Td> <Td> Son - in - law of Nikephoros I, he succeeded Staurakios on his abdication . Resigned after the revolt under Leo the Armenian and retired to a monastery, where he died on 11 January 844 . Reigned with eldest son Theophylact as co-emperor . </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Name </Th> <Th> Reign </Th> <Th> Comments </Th> </Tr> <Tr> <Td> </Td> <Td> Nikephoros I (Νικηφόρος Αʹ ὁ Λογοθέτης) </Td> <Td> 31 October 802--26 July 811 </Td> <Td> General Logothete (finance minister) under Irene, led initially successful campaigns against the Bulgars but was killed at the Battle of Pliska . </Td> </Tr> <Tr> <Td> </Td> <Td> Staurakios (Σταυράκιος) </Td> <Td> 26 July 811--2 October 811 </Td> <Td> Only son of Nikephoros I, crowned co-emperor in December 803 . Succeeded on his father's death; however, he had been heavily wounded at Pliska and left paralyzed . He was forced to resign, and retired to a monastery where he died soon after . </Td> </Tr>

Starting with octavian roman emperors took the title of what