This is something that’s come up in the 1891 census for a couple of brothers who are potentially on my family tree. Their families seem to keep moving between Newmarket and Lambourn so there’s definitely a “horse” connection somewhere. They also seem to be recorded as staying at inns / public houses a few times.
Google just comes up with journalists, but would that have been a full time job then? Records from that entire side of the family are a bit sparse, unfortunately.