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book cover for Byrdfyre Covenant

Byrdfyre Covenant

Let the flames begin...

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Book 1 of Byrdfyre
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Pub Date Jul 17 2025 | Archive Date Aug 10 2025

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Description

What do you get when you merge historical fiction and dark fantasy with slow-burn romance? Byrdfyre Covenant is here.

Jörð forgive and protect my little Byrd, should she cling to the earth…

My mother died on the same day my father went mad.

He tried to kill me. With his bare hands, he gripped my throat, stole my breath, meant to tear me from the world.

I survived, but I changed.

That was the beginning of the plague that devoured us.

I will be its ending.

I am Astrid, my mother's first child, promised to an odious priest and surrounded by brothers who love me to varying degrees, and I know how to save us, but no one will listen ...

No one but him.

He is mysterious foreigner, Will Green. Kind, intelligent, but strangely changeable, he stands by my side when others won't, whispers in my ear as we bury our dead, who are mounting up by the day, by the very minute. He tempts me with ideas about what we owe one another. I trust him, because Will Green is good and I believe in good, and in sacrifice, even in myself. And we do need to act ... but sometimes his eyes burn with a strange flame, and I'm not sure he isn't more than he seems.

Fire destroys, but it also tempers. It makes things strong. If I can harness it, and if I am careful, it may be our salvation.

Byrdfyre Covenant is about desperation and loss, unbreakable bonds and old Gods, and a young woman locked into a deal with a dark stranger that stole her humanity and chained her to him for eternity. This is a series starter that will stay with you. Expect heart-pounding action, dark horror and real-history elements, twists and turns you won't expect, and a chilling and heart-rending cliffhanger ending ... because there's always more to the story.

Jayne Starwing is a new pen name for seasoned author Olivia M. Jacques (Women's Fiction, The Madisons), who is also the co-author of The Lightbringers series (Fantasy Romance). Byrdfyre Covenant merges Literary Historical Fiction and Dark Fantasy and will appeal to fans of V.E. Schwab (The Invisible Life of Addie LaRue, Bury Our Bones in the Midnight Soil), Audrey Niffenegger (The Time Traveler’s Wife) and Sarah J. Maas (Throne of Glass).

Trigger Warnings: As this novel is set around the time of the Black Death's arrival in Norway in 1349, there is a significant amount of death and gore, including child death. The text also contains violence against women and misogyny, religious trauma, self-flagellation, murder and violence, and survivalist themes, including potential starvation, hints at future cannibalism, and more. Please read responsibly.

What do you get when you merge historical fiction and dark fantasy with slow-burn romance? Byrdfyre Covenant is here.

Jörð forgive and protect my little Byrd, should she cling to the earth…

My mother...


A Note From the Publisher

Agency Press is running a typo catch contest as well as a preorder incentive giveaway in relation to this title. Details are available in the Press Kit. These contests have been extended for Netgalley ARC readers until August 10th. If you order/preorder or send any typo catches before that date, you will still be entered to win.

Agency Press is running a typo catch contest as well as a preorder incentive giveaway in relation to this title. Details are available in the Press Kit. These contests have been extended for...


Advance Praise

⭐⭐⭐⭐⭐ Full of rich detail and unimaginable horror, Byrdfyre Covenant mingles religious trauma, Norse folklore and ethereal romance in a unique and haunting historical fantasy plague tale. Dark and disturbing, this book will have you throwing your Kindle, covering your eyes, and yet secretly wanting more. -Briar Boleyn, Best-Selling Author of On Wings of Blood (Bloodwing Academy & Queen of Roses Series) 

⭐⭐⭐⭐⭐ This deserves 10 stars. Wow. Just holy wow. I loved this book so much. It is absolutely brilliantly written. Mam, I need the next book..soon, thanks. 🫶🫶🫶 I love Jayne Starwing. -Cass Parrish, Goodreads

⭐⭐⭐⭐⭐ I just finished Byrdfyre Covenant by Jayne Starwing (thanks for the early ARC!) and I’m still thinking about it. Obsessed. Can’t believe I get to be first with my review because this text blew my mind. This book is a beautifully written blend of historical fiction, literature, and romantasy, with slow-burn romance that really hit all the right notes for me. The story follows Astrid, a reluctant survivor of the Black Plague. Throw in a martyr of a mmc, and an Old Norse God and you get a recipe for greatness! Incredible book. Truly. I am FERAL for more. -Kate Carrington, Goodreads

⭐⭐⭐⭐⭐ I was lucky enough to receive an ARC of this book, and I honestly didn’t know what to expect going in. What surprised me most was the emotional ride I took with the FMC. I loved her strength and persistence, but there were definitely moments I wanted to shake her for not seeing what was right in front of her! That push and pull made her feel real, and it’s exactly what kept me hooked. The mix of historical fiction with just a sprinkle of romance was a perfect combo. And a cliffhanger ending? I’m definitely hoping there’s more to come! -Kellie, Goodreads

⭐⭐⭐⭐⭐ Full of rich detail and unimaginable horror, Byrdfyre Covenant mingles religious trauma, Norse folklore and ethereal romance in a unique and haunting historical fantasy plague tale. Dark and...


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Available Editions

EDITION Ebook
ISBN 9360255637000
PRICE $4.99 (USD)

Available on NetGalley

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Send to Kindle (EPUB)
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Average rating from 34 members


Featured Reviews

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This is my first time reading a book by Jayne Starwing and I must say that I was very impressed. I have to admit the main character Astrid was the epitome of strong woman becaise not many people would be able to move on with their life after the black plague. I look forward to reading more of her books in the future.

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Not gonna lie, the emotional damage that came with this book was insane but was worth every tear and heartache! Although it was a somewhat slower paced book, it was exactly as it should be and I was never once bored! The story from the beginning captured my attention and held me throughout.
Astrid... I love her. I feel for her. I admire her. She's the obedient daughter that develops into her own strong woman. I need more, quite honestly. The ending was not at all what I thought it would be and I was in a complete chokehold the last 20% or so of the book... I will be thinking and speculating about this book until I hopefully get a book 2!!

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“I am what comes after. I am a moth.”

Byrdfyre Covenant is an interesting historical speculative fiction with a little dark fantasy and a tiny sprinkle of romance.

Old Gods, a ghost ship, saining (I had to look this one up!), and bargains are what I found most interesting.

This is a really intriguing perspective on what may have happened when the plague spread to Norway via a ghost ship. We experience the Black Plague with Astrid as she does what she can to survive the Black Plague, save her family and help as many village people as she can. There is a lot of death and suffering. Mob mentality is so fascinating to me. The things people will do when their fear takes over seem unbelievable. I also found it interesting to see the adaptations people made in a time when Christianity had just swept away the Old Gods.
Young Will Green is such an admirable character and Astrid is pretty relatable. Although sometimes I wanted to snap my fingers in her face and say open your eyes 😂.

I liked the flash forward letters written by archaeologists and researchers in a more modern time as they discover relics and speculate on their meaning.

Also, I have to say that I love the cover so much 💛

Fav tropes:
Old Gods 👑
Norse mythology 🔱
Plague 😷
Betrayal 💔
Bargains 🤝

Fav quotes:
“Still smells like sorcery,”

“I am what answers when the desperate cry out, Little Byrd. I am the door that opens when all others are barred.“

Thank you so much to the author, NetGalley and Agency Press for the advanced copy.

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The way this is written will captivate you. It’s very detailed, the history extensive, you feel like you’re really there.
It’s a slower paced book but I feel it’s necessary with the nature of what’s taking place.
Astrid, the fmc, is a force to be reckoned with. She has so much strength and even though they don’t deserve it she cares very deeply for all of the people.
She has to do hard things and make hard decisions but she perseveres.
There’s a lesson to be learned from this book.
Be careful what you ask for.

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Byrdfyre Covenant is a gorgeous story that weaves historical events, Norse myth, hope, desperation, and intrigue. Though I was a bit wary at first, the story is instantly engaging and leaves behind a feeling of wonder and curiosity. I thoroughly enjoyed seeing as each character developed and changed as they adjusted to their circumstances. I loved seeing how Astrid remained strong even as the odds were against her. She fought and I’m curious to see if there will be a continuation or if this is the end of her story. At the same time, I’m curious as to whose story this really is. With alternating narrators, the story maintains a mysterious energy as there are clearly more factors at play.

There was never a dull moment and there are so many notes and quotes that I took from the novel. To a point, Byrdfyre Covenant almost feels philosophical as it explores notions of religion and society, but that might actually be me reading into it too much. As I write this, I am still in awe and wonder of the book and I have a feeling that it will linger because of how deeply I felt over parts of the story.

Thank you so much to NetGalley and Jayne Starwing for the gifted ARC. All opinions are my own

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Byrdfyre Covenant follows Astrid’s story during a plague outbreak in her home town of Bjørgvin where she fights against religious doctrine, increasing distrust from her family and neighbours, accusations of witchcraft and the manipulations of an old god, all to save her people.

Dark and brutal, this is nonetheless a beautifully written tale. From the moment I started reading I was hooked, fully immersed in Astrid’s life. The intricate details of everyday life in 14th-century Norway jar perfectly with the horrors of the plague. The fantasy element weaves through the story seamlessly, alternately bringing comfort and fear as Astrid struggles to understand who and what Will Green is, and what her growing feelings for him might mean.

I will definitely be reading the next book in the series as soon as it is out.

Thank you to NetGalley for the ARC.

My review will appear on Goodreads and Instagram on 29/07/25.

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Oh wow! I had chills the entire time reading this. I am thoroughly obsessed with this dark speculative fantasy. It is so unique and beautifully written. It was easy to get lost into it. It's emotional and raw as you go through what people may have experienced with the plague. I loved how it captured the emotional toll and created this new fantasy-like story about faustian bargains, a meddling God, and a woman's desperation to survive. It also has the perfect horror undertones and vibe. Seriously a must read.

I'm in love with Jayne's beautiful writing style and her storytelling abilities are mind blowing. I am blown away.

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