
Converting to Catholicism in Crusader Kings II can be done in several ways. One method is to capture a Catholic woman during a raid, make her your concubine, and then select convert to Catholicism in the intrigue tab. Alternatively, you can wait for a Catholic ruler to send you a Bishop, select Tell me more about this god, and wait for the quest event to complete. Another strategy is to invite Catholics with high learning skills to your court and appoint them as educators to your children, increasing the chances of conversion. You can also attempt to convert by conquering a Catholic county, moving your capital there, and then converting by decision, although this option is more costly. Finally, you can make diplomatic alliances with Catholic rulers and hope they send you a missionary to facilitate your conversion.
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What You'll Learn

Capturing a Catholic woman during a raid and making her your concubine
Capturing a Catholic woman and making her your concubine is one of the quickest ways to convert to Catholicism in CK2. Here's a step-by-step guide:
First, you'll need to locate a Catholic realm with female characters, typically achieved by finding a Catholic ruler with daughters or female courtiers. Once you've identified your target, launch a raid on their lands. The raid will allow you to capture female prisoners, including the Catholic woman you intend to make your concubine. It is important to note that this strategy requires you to be playing as a Pagan ruler with access to the "Old Gods" DLC, as Pagans have the unique option to take female prisoners as concubines.
Upon capturing your desired Catholic woman, you'll have the option to take her as your concubine. This is a strategic choice, especially if your current wife is elderly and you seek a better heir. However, beware of potential murder plots from your wife and other children, as taking a concubine can lead to intrigue and conflict within your realm.
Once your Catholic concubine is established, you can initiate the religious conversion process. Navigate to the Intrigue tab and select the Convert to Catholicism option. This will allow you to adopt the faith of your concubine, providing an efficient method to shift your realm's religion away from Paganism and towards Catholicism.
It is worth noting that this approach is just one of several ways to convert to Catholicism in CK2. Alternative methods include inviting a Catholic character with high learning skills to your court and making them your high priest, waiting for a Catholic bishop to be sent to you by a Catholic ruler, or influencing your heir's education by appointing a Catholic guardian or tutor. Each method has its own nuances and potential challenges, so adapting your strategy based on your specific circumstances is crucial.
By following these steps and staying vigilant for opportunities, you can effectively capture a Catholic woman during a raid and leverage that acquisition to convert to Catholicism in CK2.
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Waiting for a Bishop sent by a Catholic ruler
One way to convert to Catholicism in Crusader Kings II is to wait for a Bishop sent by a Catholic ruler. When the Bishop arrives, select the "Tell me more about this god" option and wait for the quest event to run its course. This option can be a great way to learn about Catholicism and potentially convert without having to take more aggressive actions, such as raiding or forcing vassals to convert.
While waiting for a Bishop, there are a few things you can do to potentially influence the game and increase the chances of receiving the quest event earlier. First, try inviting a Catholic with a high learning skill to your court and appointing them as your court chaplain. This could be an Irish lady, for example, as Ireland is known for its Catholicism. Send this chaplain to head local inquisition in your capital, which may increase the chances of a Bishop being sent your way.
Additionally, you can try to increase your relationship with Catholic rulers, particularly those with higher opinions of you, as they may be more inclined to send a Bishop your way. You can also try to influence your heir's religion by having them tutored by Catholics or appointing a Catholic guardian. If your heir is already of age, you can directly demand that they convert.
It's worth noting that converting to Catholicism can have significant benefits, especially if you're looking to move away from Paganism and closer to Roman Catholic Europe, as Poland did in its history. However, it may take some time and effort to fully convert your realm, including replacing your vassals with Catholics and ensuring they have high stewardship to make the transition smoother.
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Inviting Catholics to your court
One way to convert to Catholicism in CK2 is to invite Catholics with high learning skills to your court and appoint them as tutors for your children. This will increase the chances of your children converting to Catholicism. You can also appoint a Catholic court chaplain to "head local inquisition" in your capital, which can help with conversion.
Another strategy is to raid Catholic lands and capture a Catholic woman, who you can then take as a concubine. After taking her as a concubine, you can choose to convert to Catholicism through the intrigue tab. Alternatively, you can wait for a Bishop to be sent to you by a Catholic ruler and select the option to learn more about Catholicism, eventually leading to conversion.
Converting your realm to Catholicism can be achieved by replacing your vassals with Catholics. Ensure that your new vassals have high stewardship to make the process smoother. You can force your current vassals to convert through the diplomacy tab or revoke their titles if you have medium crown authority.
Additionally, you can conquer a Catholic county, move your capital there, and then convert by decision, although this option is more costly. Making friends with a Catholic ruler and hoping they send a missionary is another viable option, but it may be challenging to initiate.
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Raising your heir with a Catholic guardian
When raising your heir, it is important to consider the role of their guardian, especially if you want to convert them to Catholicism. Here are some tips to keep in mind:
First, it is recommended to choose a guardian with desirable traits and high stats. While the guardian's base stat may not be as crucial as their profession, certain traits can increase the chances of your heir developing positive traits. For example, if you want your heir to excel in stewardship, look for guardians with the Midas Touched trait. Additionally, consider the guardian's profession; for instance, a Brilliant Strategist with a high martial stat can be beneficial if you want your heir to have a martial education.
Second, be cautious of negative traits in potential guardians. Avoid those with the deceitful trait, as it may lead to your heir developing the weak trait. Similarly, guardians with negative personality traits may increase the likelihood of your heir picking up undesirable traits or even result in your child being abused.
Third, you can influence your heir's religion by selecting a Catholic guardian. This method may not always work, but it increases the chances of your heir converting to Catholicism. However, keep in mind that even if your heir converts, it doesn't guarantee that their children will also be Catholic, as religion can be passed down from either parent.
Fourth, it is generally advisable to avoid giving your heir land or too much control. This allows you to maintain influence over them and their children. By keeping your heir in your court, you can more easily monitor their education and intervene if necessary.
Finally, remember that even with the best guardians, your heir's traits can still be underwhelming. Genetics play a role, and certain congenital traits may be passed down. Additionally, events during your heir's education can impact their development, and they may pick up negative traits before switching to a different guardian later in their adolescence.
In conclusion, while raising your heir with a Catholic guardian may increase their chances of converting, it is not a guaranteed outcome. Focus on selecting guardians with desirable traits and professions, and be mindful of potential negative influences to give your heir the best chance at success.
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Having a Catholic liege
Conversion to Catholicism:
Firstly, having a Catholic liege can provide an opportunity for your character to convert to Catholicism. This can be done by accepting the liege's offer to convert or by taking the decision to convert to their religion. Conversion can also occur by interacting with Catholic characters in your court, such as through education or marriage. For example, appointing a Catholic guardian for your heir or educating them with a tutor of the Catholic faith can increase the chances of conversion.
Improving Relations:
Improving relations with your Catholic liege and the Catholic faction as a whole can bring several benefits. For example, having the Pope's favour can grant access to powerful tools, such as excommunication of rivals and the ability to call Crusades. To improve relations, consider increasing your piety, ensuring your culture aligns with the Pope's preferences, and utilizing the Chaplain's "Improve Religious Relations" job. Additionally, participating in Crusades can grant the "Crusader" trait to your character.
Managing Religious Differences:
However, having a Catholic liege as a vassal can also present challenges, especially if your character follows a different faith. Religious differences can increase revolt risk within your provinces, so it is essential to manage these differences carefully. One strategy is to appoint Catholic vassals to hold counties of another religion, as they will have their own court chaplains, speeding up the spread of Catholicism. Additionally, consider replacing your vassals with those of your preferred religion, especially if they have high stewardship skills.
Dealing with a Converting Liege:
If your liege lord converts to Catholicism while you remain of a different faith, it can create narrative opportunities for unrest and intrigue. You may choose to foment religious unrest, challenge the liege, or work towards replacing them with a ruler of your preferred faith. Alternatively, you might decide to convert to Catholicism to maintain favourable relations, especially if the Catholic faction is gaining influence.
In summary, having a Catholic liege in Crusader Kings II presents unique opportunities and challenges. It can provide avenues for conversion, improve relations with the Catholic faction, and grant access to powerful tools like Crusades. However, managing religious differences and dealing with a converting liege requires careful decision-making to minimize unrest and maintain power.
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Frequently asked questions
One way is to capture a Catholic woman on a raid, take her as a concubine and then select "convert to Catholicism" in the intrigue tab. Alternatively, you can wait for a Bishop to be sent to you by a Catholic ruler, select "Tell me more about this god" and wait for the quest event to run its course.
You can put your heir with a Catholic guardian, who may convert them. You can also educate your heir with someone of your preferred religion, which may result in conversion.
Once you have converted, you should appoint a Catholic court chaplain to convert the provinces. You can also invite Catholics to your court and replace your vassals with them.
You should aim to convert as an old, prestigious ruler, as vassals will like you less if you convert as a young ruler. You can also force vassals to convert via the diplomacy tab or revoke their titles if you have medium crown authority.













