In 1904, Franz Leswig had the castle constructed. He had fortified it with mercenaries from bayern in an attempt to protect his castle from other lords. As he had expected, another lord, Heinrich Kaishelm was right at the doorstep of his castle.
• Use the pitch to block the enemy from the walls
• Uneeded spearmen should be put in the main keep to help defend.
My first siege, and I'm quite new to the original stronghold also. (Actually I bought stronghold crusader before the original!)