I hate Dethert

Im on my second playthrough in my first i assassinated Dethert and became king of the Vlandians, Now In my second playthrough i have a Party of 220 and im clan tier 6 i was originally in The western empire but they barely had any wars or Any good fiefs, I joined the Vlandians because they are always at war with sturgia, Battania or Aserai Now I seiged The town of Seonon with my 220 men Party against 500 Battanians there, I lost a 150 of my best troops and im left with only some peasants and A hired pike. I thought atleast i would get this city. When i go into the voting Screen. 70% of the vote gets to me AND YOU KNOW WHAT DETHERT DOES? HE TAKES MY FIEF! Now i left vlandia and joined the Battanians, they gave me some fiefs and i executed Dethert