Monster Blood Tattoo is a children's/young adult's high fantasy trilogy written by Australian author D. M. Cornish. It tells the story of Rossamünd, a boy unfortunately christened with a girl's name, who has lived his entire life in a foundlingery (kind of an orphanage) before he is chosen to become a lamplighter in a far away city. The book's action takes place entirely on the Half-Continent, a Dickensian world run by arcane science and alchemy, and plagued with deadly (and not-so-deadly) monsters. The books are notable for the extraordinary amount of constructed language which pervades the entire narrative; an extensive glossary of terms is provided, as an in-universe document "The Explicarium".