I have Census evidence of a relative of mine working as a "Billiard Marker" at the Bay Horse(hotel), Burnley, Lancashire (1891), however he was only 12!!

:: What did a "Billiard Marker" do?
:: Would it be feasible for a 12 yo to do this work?

One definition for a Billiard Marker I have is:

A Billiard Marker keeps scores made by players and indicates them on a scoring board. In public billiard halls his duties also entail things such as allocating tables, cues, chalk, and sometimes refreshment too. He coaches learners, plays with patrons and collects fees for use of the tables.