Below you can find the This roman emperor played on tv by derek jacobi married his own niece; she poisoned him Jeopardy Words Answer. The answer to This roman emperor played on tv by derek jacobi married his own niece; she poisoned him has 8 letters. This clue belongs to the Dysfunctional royal families category and is part of Jeopardy Word Level 1614. If you scroll near the bottom you will find other clues and answers part of level 1614