Yep, same thing here, only 1 hour of campaign behind me, i'm a level 4 trader, 8 aserai t1 troops in my army only fought against looters;
Suddenly a T4 clan called Legion of the Betrayed declare war on me out of the blue, never met any of them before.
Since i'm still clan t1, i'm not vassalized, much less having my own kingdom, i cannot even propose peace since i've got no diplomatic panel access...
So what now,am i gonna spent my entire campaing getting hunted and thrown in dungeons for no reason?
The only reason i could find for MAYBE warranting something like this : i've given 115 gold to an empire princess to barter for one of her mule but come on, a war over a mule? lmao