The Lost Kingdom

The Lost Kingdom final cover

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“Readers will enjoy the vigorous blend of colonial struggle with a touch of Jules Verne. An old-fashioned adventure story to curl up with on a rainy afternoon.” – Kirkus

“Continuing to explore new ground and ideas, Kirby mixes American myth with characters based on historical figures in an imaginative story… Kirby skillfully draws on 18th-century beliefs, legends, and personages to construct a historical fantasy that touches on the scientific disciplines of the era to create wonders both natural and manmade.” – Publishers Weekly

“This riveting adventure brings to life a remarkably realistic mythical America, and young readers will quickly become invested in the characters, many of whom are based on actual historical figures… Fascinating and fun for kids and adults alike, The Lost Kingdom offers an inventive look at a unique time and place.” – BookPage

“An inventive take on colonial history that cunningly highlights the eccentric beliefs of some of the most enlightened 18th century minds.” – Bulletin of the Center for Children’s Books


In this extraordinary adventure story, Billy Bartram, his father, and a secret society of philosophers and scientists venture into the Colonial American wilderness in search of the lost people of the Welsh Prince Madoc, seeking aid in the coming war against the French. Traveling in a flying airship, the members of the expedition find their lives frequently endangered in the untamed American West by terrifying creatures, a party of French soldiers hot on their trail, and the constant threat of traitors and spies. Billy will face hazards greater than he can ever imagine as, together with his father, he gets caught up in the fight for the biggest prize of all: America.

THE LOST KINGDOM is an epic journey filled with marvelous exploits, courage and intrigue, and a bold reimagining of a mythical America. Award winning author Matthew J. Kirby brings his signature storytelling prowess and superb craft to this astonishing story of fathers and sons, the beginnings of a nation, and wonder-filled adventure

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11 Responses

  1. Katie

     /  January 31, 2014

    I just finished listening to The Lost Kingdom on audio, and I was wondering if it will be a standalone title, or the start to a series about Billy and the other philosophers. Thanks! Katie

    • Matthew

       /  February 21, 2014

      It’s a standalone, but the further adventures of the Philosophical Society would be awesome!

  2. Anonymous

     /  March 5, 2014

    I just saw this book and now I really want to read it! This book sounds really good. I love history stories. Matthew J. Kirby’s books rock!!

  3. lucero

     /  September 7, 2014

    I am from Peru and i like your story
    Can you tell me who dies in the story?
    I don´t remembered

    • Matthew

       /  October 2, 2014

      No important fatalities yet, thank goodness! By the way, I’ve been to Peru and I love it. Especially the food!

  4. this amazing

  5. Reuben

     /  June 11, 2015

    Is there a second book to The Quantum League

    • Matthew

       /  July 1, 2015

      I’ve written it, but my publisher hasn’t decided to publish it yet. Hopefully soon!

  6. KirbyFan

     /  September 25, 2017

    What do you think is your best book written?
    I love the Clockwork Three but I wish there was a sequel to it… I feel like we don;t know for sure what happened to my favorite character – Guiseppe!! Thanks, though your books are so amazing!

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