How to Write Royal Families for Fantasy Books

Royal families dominate fantasy novels from The Lord of the Rings to Game of Thrones. Kings, queens, princes, and princesses fill castles with political intrigue and dramatic power struggles. However, many fantasy writers struggle to create royal families that feel authentic. They end up with characters who act like modern people wearing crowns rather than true royalty shaped by centuries of tradition, power, and obligation. Writing a compelling royal family for your fantasy novel requires understanding how power actually works in dynastic systems. Today’s post will  help you learn how to create believable and emotionally complex royal families for your fantasy worlds and books. 

I’ve been writing fantasy and sci-fi for years (check out my series, The Fallen Age Saga) and one thing I’ve learned is that royal families need to feel like living systems and not just setpieces in the background. Part of creating a royal family is also having an understanding of your world before your characters. World building is a big part of the fantasy-writing process. If you’re working on building your fantasy world, grab a free copy of my 10-question world building primer to help you get started on the process of writing your next amazing fantasy world today.

Royal Families Are Political Institutions

Before you start naming princes and princesses, you need to understand what a royal family actually is. At its core, a royal family exists for one purpose: preserving power across generations. Every decision a royal family makes must have a purpose and serve the family better. For example, marriage is about political alliances and children are assets in political games. Showing up in the public sphere is about demonstrating stability and strength more than just spectacle. 

When you create a royal family for your fantasy book, you should think about the following questions: 

• What gives this family the right to rule? 
• What is the source of this family’s power? 
• Who benefits from this family remaining in power? 
• What happens if the family is ousted from power? 

A royal family is effectively the main governing body of the kingdom or at least the main figurehead that people see the country by. 

Creating Realistic Internal Power Dynamics

Within any royal family there will be conflict, whether that be stemming from ambition, fear, or hatred. Every member of the royal family will be living under constant scrutiny from family members and the court at large. You might see a lot of fantasy books focus on this idea within royal families where succession is often a part of the main conflict. For instance, maybe there are multiple princes and each one has a reason for wanting the throne. Their internal conflict might culminate in murder. 

There’s also the issue of favoritism within the royal family. A king might prefer one son over the other, even if that son isn’t the first-born. You’ll often also see this as being a source of conflict in many fantasy books out there. 

Gender also determines a royal’s options. In most traditional monarchies, sons inherit while daughters typically become bargaining chips for alliances. But this creates its own forms of power. A princess who secures a crucial alliance might wield more real influence than a prince with an empty title. This could be something interesting to show about your world building as well. 

Designing Royal Personalities Shaped by Power

Royal characters shouldn’t think or act like standard people who happen to live in castles. They’ve been raised from birth to see the world through the lens of power, duty, and hierarchy. This shapes their psychology in a different way than someone who was raised to be the son of a farmer or a soldier or even a brigand. 

Consider what each royal family member was trained to value. For example, a crown prince learns that the kingdom’s needs outweigh personal desires. He might genuinely believe that thousands dying in war is acceptable if it preserves the dynasty. 

Emotional expression is effectively political, as showing weakness can invite unwanted challenge. However, a prince showing too much strength could be viewed as a threat by the current king. Royal characters need to adjust the way they interact, think, and deal with others based on the situation and what it calls for. 

The isolation of royalty also tends to shape them profoundly. They can never fully trust anyone, not even family. You tend to see the trope of the paranoid monarch a lot in dark/grimdark fantasy books as well. Royal characters are often more prone to fearing those around them and being assassinated compared to the average person in their country. 

A big part of this is determined by how you design your characters, which is exactly why a tool like my Ultimate Guide to Character Creation is a great resource to use for this part. You’ll learn precisely how to create fully-fleshed out characters from the ground up and make them believable enough to feel real to your readers. Grab yourself a copy of my 150+ page workbook today → The Ultimate Character Creation Guide. 

Building Believable Royal Relationships

Relationships within royal families rarely resemble normal family bonds. Every interaction in some capacity carries political weight. Even something like genuine feelings can easily get filtered through political necessity. For instance, a parent’s relationship with their children is vastly different from what you might see in a royal family. A king might see his sons as successors to be trained or he may see them as threats that need to be put in their place. The king might view his daughters as political tools to use to gain leverage with other empires. 

Sibling relationships are also pretty different in the royal context in fantasy books. Royal siblings can be very close or they can be staunch rivals. They may have affection for each other, but they may also harbor some level of resentment towards one another due to the concept of who will take the throne next or not. 

Between the king and queen, there probably isn’t much love either. Kings often had mistresses and the presence of half-children could easily threaten the sanctity of the succession line. On the other hand, a king may act like King Henry VIII where he continued executing some of his wives for not supposedly producing him a male heir. That’s also why the Anglican Church was eventually formed so that King Henry VIII could get a divorce… story for another time though. 

Check out this post to learn how to write medieval fantasy!

You might have also seen the big trend of the princess x knight trope on TikTok or something like that. It’s also a pretty interesting thing you can look into if you’re writing a more romantasy-focused story. Princess x knight basically involves a princess falling in love with a knight and it’s riddled with forbidden love, since they’re not supposed to be together. It’s a trope I personally enjoy as well. If you’re looking to get into writing romantasy as well, you should grab a copy of my 160+ page Ultimate Guide to Writing Romantasy workbook! 

Creating Dynasty-Specific Traditions and Rules

Every royal dynasty develops unique traditions that reinforce their power and identity. These traditions should feel specific to your world while serving clear political purposes. They create the framework within which your royal characters operate and give your fantasy world distinctive flavor.

Succession rules determine everything about how royal family members interact. If succession follows strict primogeniture (eldest son inherits), younger sons should know their place from birth. But if succession can be influenced by merit, religious approval, or noble selection, competition will persist in that dynamic. Some dynasties might require ritual combat between heirs. Others might let the dying monarch choose their successor. Each system creates different family dynamics and can set the stage for a vastly wide array of conflicts in your story. 

This is definitely something that you should focus on when it comes to your world building. You want to relate these practices to things that make sense in your world. Logically building your world is important to keeping any story you write in the fantasy genre believable. 

Common Mistakes to Avoid When Writing Royal Families

Oftentimes, something I notice when it comes to royal families, some writers just make them feel too modern or too simple. Obviously, a family living in the 1100s is not going to be the same as one in 2025! If your world is based on the medieval period, then it better feel medieval. 

Common mistakes include:

• Royal families being strangely emotionally healthy. Royal families throughout history were very fractured and there was a lot of corruption in their dealings with each other. For some inspo, read up on the War of the Roses which was a conflict within the House of the Plantagenets.
• Don’t make succession simple/uncontested. Even if the royal family has the whole “eldest son goes next” system, I’m sure the younger sons are not going to be happy about it. 
• Royals don’t just have modern attitudes out of the blue. A princess who believes in gender equality will feel insanely out of place if there’s no context given. Most of the time, royals just followed the system that they knew because that’s literally all they knew. 
• Don’t ignore the political cost of personal decisions. When a prince refuses to follow an arranged marriage, kingdoms might genuinely go to war. When a king shows too much favoritism, this can lead to rebellion within his family. 

I was watching this movie called The King on Netflix the other day (amazing movie, by the way), and I noticed something that I really liked: Early on in the movie, Henry put himself in the line of danger to try and prevent his younger brother from going to war against a rebellious noble’s son. However, despite Henry winning hand-to-hand combat against the rebellious son, Henry’s younger brother was angry because he viewed the victory as Henry taking all the credit. He basically says that nobody will think of anything but what Henry did. This shows some deep-seated resentment and competition between the two, as technically, Henry was supposed to be next-in-line, but his father didn’t want him to be the next king. So, the younger brother feels pressured to try and be better. 

How to Write Royal Families for Fantasy Books and Stories Step by Step

Creating a compelling royal family requires building on your world building and keeping things logical and consistent. 

Step 1: Define Your Dynasty’s Source of Power 

Start with legitimacy. Does your royal family rule by divine right? Did they conquer the kingdom? Do noble houses elect them? Are they backed by wealthy merchants or military might? This foundation determines everything about how they maintain power and who threatens it.

Step 2: Establish Clear Succession Laws 

Decide exactly how power transfers between generations. Who can inherit? What disqualifies someone? Who decides if rules are broken? What happens if no clear heir exists? These sorts of laws can help set the stage for conflict and interesting character dynamics. 

Step 3: Create a Family Tree

Create your family tree going back at least three generations. Don’t just focus on the “main” royal family in this tree. Feel free to include characters that are illegitimate children, deceased members who still influence the living, and extended family with claims. 

From there, you want to determine things like who of the family is favored, who’s cast aside, who’s ambitious, etc… 

Step 4: Design Court Structure Around the Family 

Determine how noble houses, religious orders, military leaders, and wealthy merchants relate to your royal family. Who has influence? Who wants more power? Who benefits from stability versus chaos? This context makes your royal family’s choices matter and can also set the scene properly for any future conflicts in your story.

Step 5: Create Historical Events That Shape the Current Generation 

History is something that will always impact the present and the future. So, think about things like wars, betrayals, marriages, disasters, etc… What happened in the past that will have an impact on your story’s present? For example, maybe the current king seized power by usurping his brother. Then maybe the king’s nephew will come to take revenge for his father. This is something important that you need to focus on. 

Step 6: Develop Unique Traditions and Restrictions 

Create specific ceremonies, laws, and customs that only apply to royalty. These should reinforce their power while constraining their behavior. For instance, maybe there are coming-of-age ceremonies that they must undergo. Maybe the royal family has specific sacrificial rituals that they undertake to maintain power. Be as creative as you want with this. 

Step 7: Build in Inherent Conflicts 

Every royal family needs built-in tension. Without internal tension, you risk boring your readers. People want to see the royal family that has fractures in it due to a number of things. Maybe there are illegitimate children that seek a claim to fortune. Maybe there are religious figureheads that influence the king and can undermine the princes. Conflict is what drives things in your story and it can set the stage for the main conflict. 

You want your royal family to fit in with the rest of your world and it needs to influence and impact the world at large as well. For more help with world building, check out my 340+ page workbook, The Ultimate Guide to World Building. It’s got tons of advice, worksheets, guided sections and more that can help you create complex systems and believable, rich fantasy worlds! Grab your copy today → The Ultimate Guide to World Building.

Royal Families Should Drive Your Story’s Plot!

As I said earlier, a mistake many writers make with royal families is that they just exist for the sake of existing. Your royal family doesn’t need to be the main spectacle of your story, but their influence should be felt in your story. Their conflicts, obligations, and ambitions create natural plot momentum. You want to use the power struggles and internal conflicts to shape the world at large. 

For example, maybe there are two princes who are competing for the throne. Maybe this sparks a civil war and your main character is a soldier who chooses a side but ends up effectively having to fight his own friends in war. Or maybe your character is a political advisor who seeks to create this conflict so that he can take the throne from both of them anyways. 

I really recommend researching real-world examples of royal family conflicts. There’s so many out there, and you don’t even need to stick to just European ones. You can easily look at things like Ancient Rome and how many issues took place within the Emperor’s family or how many times the Praetorian Guard just assassinated emperors… something like that. Maybe your story has a son of an emperor influence the Praetorian Guard to assassinate the current emperor and he takes the throne and then the Praetorians just take out the new emperor later on anyways.

Conclusion

Writing a believable royal family for fantasy requires treating them as products of their political system rather than decorated regular characters. They should think differently, love differently, and fear differently than commoners. Remember that royal families are institutions first and families second. Every relationship exists within frameworks of power, duty, and tradition.

Don’t forget to grab your free copy of my 10-question world building primer to help develop the political systems around your royal family. And if you want comprehensive guidance on creating complex fantasy worlds, check out The Ultimate Guide to World Building for detailed instruction on economies, religions, cultures, and political systems that make royal families feel authentic.

FAQs

This post contains affiliate links, which means I earn a small commission at no additional cost to you when you purchase something through one of my links. Thank you for your support!