Wow that really means you hated him.
It was more an effort to remove him from office. The Duke didn't buy any food for the peasants of Madina, instead he expected free hand-outs (the constant buy order was set at 1 gold per 100 bushels). He didn't fund his army, nor issue it any orders (even though he was the Marshal) and he didn't actively seek out getting knights for the region, even when new nobles turned up.
I'm not overly sure why he wasn't just banned from the realm, but I guess this way was much more fun!
