1. After defeating Poland, the nobles who captured them are now in one of your castles.
2. The Lord has captured their nobles in your Lord's castle.
3. Captured by other enemy lords in castles in Poland and other countries.
It is easy to get them to join you. First of all, release all Polish aristocratic prisoners in your hands (note: unconditional release will increase their goodwill towards you). At the same time, you should also pay attention to your honor and reputation. The higher the two, the more likely it is to join you. So, if you want them to join you, you must work hard to improve your honor and reputation.
Extended data
Polish mainline mission
First of all, Jacques de Clermont asked you to go to the village at first. The three tasks given by the village chief must be completed. Complete these three tasks to continue the main task. All three main lines are like this.
Anti-bandits: This task is simple. Just kill about 10 bandits near the village. In fact, the protagonist can solve it himself.
Goods: The village chief asked you to bring him three packs of salt. In Cossack countries, such as Qizil, salt is very cheap.