author
Known only through a small surviving record, this 19th-century writer left behind a detailed and lively guide to riding. His best-known work opens a window onto Victorian horsemanship, especially the way riding was taught to women.

by active 1866-1874 Robert Henderson
Robert Henderson is an obscure 19th-century author whose surviving bibliographic record is very slim. Project Gutenberg lists him simply as "active 1866-1874" and credits him with The Barb and the Bridle: A Handbook of Equitation for Ladies, and Manual of Instruction in the Science of Riding, from the Preparatory Suppling Exercises.
That book is a practical manual of equitation written for women, covering preparation, riding technique, and horsemanship in a clear instructional style. Because so little reliable biographical information appears to survive in the sources available here, it is safest to remember Henderson chiefly through this work and the glimpse it gives into Victorian riding culture.
No confirmed portrait was found in the sources reviewed for this entry.