Captain J. E. Hance
British author. Full name John Edward Hance. Captain Hance was something of a riding expert in his day: he taught riding (including in the army) and wrote a number of instructional books about the subject, the most well known probably being School For Horse and Rider. He did stray somewhat into fiction with a children's pony story which is of the instruction-within-fiction type. I haven't read it so do not know how successful it is in pulling off the combination. As far as I know he had no other forays into the children's pony novel territory.