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Greyson J. Riley is an American historian, entrepreneur, writer, and world traveler.

Greyson was homeschooled and took his first college class at 11 years old. He graduated with a Bachelor of Science summa cum laude in History in May 2017, just a month after his 17th birthday. He also holds a Master of Science in History from the University of Edinburgh.

When he was a teenager, Greyson became increasingly concerned about the next generation's literacy in the study of history. He wanted to teach history to kids in a way that they would find interesting and fun. With the help of some of the world's best medieval scholars and LEGO builders, Greyson authored Medieval LEGO -a book that teaches the real-life history of medieval times through LEGO illustrations. Medieval LEGO can be found in Barnes & Nobles, Books-A-Million, and on

Greyson was also the founder and creator of BrickUniverse, a massive LEGO fan event that he started when he was 14 years old in 2014. The first event was held in Raleigh, North Carolina in 2014 and there has been over 50 BrickUniverse conventions organized across the United States since. From 2014-2022 Greyson had organized and managed the day-to-day operations for every BrickUniverse event across the country inspiring thousands of attendees to learn and create all through LEGO bricks. More recently, Greyson launched a fresh new event: Brick Convention. In its inaugural year, Brick Convention is set to host a record 15 largescale events across North America.


Always a student of history, Greyson enjoys traveling and visiting historical sites around the world. He has traveled to over 50 countries. His short-form videos of his travels to historical sites have garnered over 100 million views online. He also enjoys photography and writing. Greyson has written several internationally published articles advocating for the preservation of history and historical sites around the world. One of his most recent undertaking is Atlas of History, a project to locate and organize historical landmarks around the world through accessible maps. When released, Atlas of History will be the largest global source of its kind for historical landmarks around the world. 

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