C.S. Larsen's family is mainly of Danish origins; his grandparents emigrated from Copenhagan through Ellis Island in the early 1900's, settling in the small town of St. Louis Park, Minnesota. His father, Sterling Larsen, grew up in the area, marrying Karen from Chippewa Falls, Wisconsin. He has two older brothers Erik and Todd, both currently living in Minnesota. C.S. Larsen grew up in Plymouth, Minnesota, before moving to Apple Valley, and eventually to Farmington were he graduated from high school in 1984. After receiving a double major in Computer Science and Electronics Engineering at Minnesota State University Mankato, he settled down in Rochester where he currently lives.
Writings and literary influences
As a child and a teenager, C.S. Larsen grew up reading the works of J.R.R. Tolkien, C.S. Lewis, Piers Anthony, Isaac Asimov, Ray Bradury, Arthur C. Clarke, David Eddings, Terry Brooks, Robert A. Heinlein, and Stephen R. Donaldson, among others. More recent influences are Neil Gaiman, Stephen King, J.K. Rowling, Scott Westerfeld, D.J. MacHale, and Eoin Colfer.
In the late 1990s, C.S. Larsen published several technical books and articles for IBM, before getting more serious with his real passion in writing fantasy and science fiction. In 2006, he published The Magic Krystal and the Secret of Banderville. The following year, The Chronicles of Marvin Archibald Trekker: Boy Magician came out, winning the American Texas Writers Guild award. He published numerous short stories in the mid 2000's, winning several awards.
In 2008, he published Ghosts of Southeastern Minnesota (Schiffer Publishing). Also in 2008, his story, "Adam of Argotha", came out in an anthology, Beacons of Tommorrow. In the fall of 2009, Crust and Spray (Millbrooks Press) came out. Followed in 2010 by Strange Minnesota Monsters (Schiffer Publishing), 2011 Haunted Mantorville (History Press), and in 2015 Campfire Tales Great Lakes (Schiffer Publishing).