Picked by Brethren Trilogy fans

Here are 4 books that Brethren Trilogy fans have personally recommended once you finish the Brethren Trilogy series. Book DNA is a community of authors and super-readers sharing their favorite books with the world.

Book cover of The Baltic Crusade

Jon Byrne Author Of Sword Brethren

From my list on Medieval Crusades.

Why am I passionate about this?

I have always been passionate about history–especially military history, and have collected books since I was a child. In time, I became particularly absorbed with the medieval world, building up a comprehensive library of books on all aspects of life during this fascinating time. In my research, I have traveled to all of the locations mentioned in the book: East Anglia, Bremen, Lübeck, and Latvia. I particularly love trying to bring the characters to life, fitting them, and creating an interesting plot around actual historical events.

Jon's book list on Medieval Crusades

Jon Byrne Why Jon loves this book

William Urban is an American history professor who specializes in the Baltic Crusades. He is probably the pre-eminent English-speaking historian on this subject and has written many other books–mostly on this theme or the Teutonic Knights. I particularly enjoy his no-nonsense writing style. The book has proven invaluable in my own research as it just concentrates on the Crusade in Livonia and Estonia in the first half of the 13th century–as well as showing the other political events taking place in Germany at the time. 

Urban was a great help to my own book. He kindly read an earlier draft of Sword Brethren and gave me some crucial historical advice. He has also agreed to read the next book in the series early in 2025, and I await his opinion with anticipation.

By William L. Urban ,

Why should I read it?

1 author picked The Baltic Crusade as one of their favorite books, and they share why you should read it.


Book cover of All Things Are Lights

Jon Byrne Author Of Sword Brethren

From my list on Medieval Crusades.

Why am I passionate about this?

I have always been passionate about history–especially military history, and have collected books since I was a child. In time, I became particularly absorbed with the medieval world, building up a comprehensive library of books on all aspects of life during this fascinating time. In my research, I have traveled to all of the locations mentioned in the book: East Anglia, Bremen, Lübeck, and Latvia. I particularly love trying to bring the characters to life, fitting them, and creating an interesting plot around actual historical events.

Jon's book list on Medieval Crusades

Jon Byrne Why Jon loves this book

I first read this book over thirty years ago and it is set during the Albigensian Crusade against the Cathars in Southern France. There is a major love and romance element to the plot that sees Roland, a troubadour, pitted against his half-brother Amalric.

I bought the book second-hand and have read it a few times over the years. Beforehand, I knew very little about the brutal Inquisition and the Albigensian Crusade in particular, and this book ignited my interest in a period not often covered in historical fiction. I would recommend it to anyone interested in this little-known period of history.

By Robert Shea ,

Why should I read it?

1 author picked All Things Are Lights as one of their favorite books, and they share why you should read it.

What is this book about?

Lured by the glory of the Crusades, legendary troubadour Roland battles the evil Amalric, the Inquisition, and infidel armies for the love of two women--Diana, a hunted Cathar heretic, and Nicolette, wed to Amalric


Book cover of Lionheart

Jon Byrne Author Of Sword Brethren

From my list on Medieval Crusades.

Why am I passionate about this?

I have always been passionate about history–especially military history, and have collected books since I was a child. In time, I became particularly absorbed with the medieval world, building up a comprehensive library of books on all aspects of life during this fascinating time. In my research, I have traveled to all of the locations mentioned in the book: East Anglia, Bremen, Lübeck, and Latvia. I particularly love trying to bring the characters to life, fitting them, and creating an interesting plot around actual historical events.

Jon's book list on Medieval Crusades

Jon Byrne Why Jon loves this book

This is an action-packed book that tells the story of Ferdia, an Irish noble, who is held as a hostage in Wales to ensure the good behavior of his father. He faces relentless bullying and persecution before saving the life of King Richard III and entering his court, where he becomes the king’s squire. The action continues in France as Richard attempts to put down a rebellion, but the larger threat to Ferdia himself turns out to be a member of King Richard’s own family.

The book has all the ingredients of an epic historical adventure, with thrilling action, relentless battles, and intrigue. I particularly enjoyed Kane’s vivid description of the 12th-century world and the authentic period details. The series continues with Crusader and King.

By Ben Kane ,

Why should I read it?

1 author picked Lionheart as one of their favorite books, and they share why you should read it.

What is this book about?

REBEL. LEADER. BROTHER. KING.

1179. Henry II is King of England, Wales, Ireland, Normandy, Brittany and Aquitaine. The House of Plantagenet reigns supreme.

But there is unrest in Henry's house. Not for the first time, his family talks of rebellion.

Ferdia - an Irish nobleman taken captive during the conquest of his homeland - saves the life of Richard, the king's son. In reward for his bravery, he is made squire to Richard, who is already a renowned warrior.

Crossing the English Channel, the two are plunged into a campaign to crush rebels in Aquitaine. The bloody battles and gruelling…


Book cover of The Northern Crusades

Jon Byrne Author Of Sword Brethren

From my list on Medieval Crusades.

Why am I passionate about this?

I have always been passionate about history–especially military history, and have collected books since I was a child. In time, I became particularly absorbed with the medieval world, building up a comprehensive library of books on all aspects of life during this fascinating time. In my research, I have traveled to all of the locations mentioned in the book: East Anglia, Bremen, Lübeck, and Latvia. I particularly love trying to bring the characters to life, fitting them, and creating an interesting plot around actual historical events.

Jon's book list on Medieval Crusades

Jon Byrne Why Jon loves this book

I have always been fascinated by medieval history, but I became interested in this particular era after reading this book and learning about the German Order of Swordbrothers (Schwertbrßderorden). 

What intrigued me was that they were a small Order, not very pious or saintly. They were unorthodox and argued constantly with Bishop Albert, the leader of the Christian mission. They were a rough and ready lot, acting more like brigands than warrior monks. One of the brothers murdered the first master, and they locked up their second master when he tried to exert more control over their behavior. Over time, they were accused of almost every crime.

I loved Christiansen’s book, which opened a new world of discovery. He writes in a witty, easy-to-read style that hooked me from the beginning.

By Eric Christiansen ,

Why should I read it?

2 authors picked The Northern Crusades as one of their favorite books, and they share why you should read it.

What is this book about?

The 'Northern Crusades', inspired by the Pope's call for a Holy War, are less celebrated than those in the Middle East, but they were also more successful: vast new territories became and remain Christian, such as Finland, Estonia and Prussia. Newly revised in the light of the recent developments in Baltic and Northern medieval research, this authoritative overview provides a balanced and compelling account of a tumultuous era.