J. Kemper

J. Kemper is the credited author of Maximilian in Mexico, a historical work available through Project Gutenberg. The English edition was translated by George P. Upton and presented as part of the Life Stories for Young People series.

Reliable biographical details about Kemper are scarce in the sources I could confirm. Based on the surviving catalog records available here, Kemper appears to be known mainly through this one book rather than through a widely documented public literary career.

That book retells the story of Maximilian, Emperor of Mexico, for younger readers, focusing on the political turmoil, foreign intervention, and personal tragedy surrounding his short reign. Because confirmed information about the author is limited, it is safest to view J. Kemper as an obscure historical writer whose work survives chiefly through this volume.