Matthew Harffy is a historical fiction author best known for his Bernicia Chronicles series. His work primarily focuses on the early medieval period in Britain, especially the Anglo-Saxon and Viking eras. Harffy's novels are characterized by detailed historical research, vivid world-building, and action-packed storytelling. They typically follow the adventures of Beobrand, a young warrior who rises through the ranks in the tumultuous times of 7th-century England. Harffy's writing has been praised for its authenticity and immersive quality, engaging readers with a blend of history and compelling narrative.