attendant

1. (chiefly archaic) A visitor or caller; one who attends (is present at or regularly goes to) some event or place.Examples: "The most remarkable of all the attendants of the exhibition at the grove near Rockville, was the grace and loveliness of the young beauties, who, mingling with the crowd of farmers, were all intent and gazing upon the stock and other agricultural products, unconscious that they were themselves ‘the observed of all observers;’ […]"; "In early life our subject was an attendant of Public School No. 17 in Brooklyn, and after fitting himself for business he engaged in various occupations in New York city up to the year 1889, at which time he removed to the town of Hempstead, and during the succeeding six years followed fanning as an occupation."archaic

2. (law) One who owes a duty or service to another.