A lackey or lacquey is a term for a uniformed manservant, in its original meaning (attested 1529, according to the OED).
The modern connotation of "servile follower" appeared later, in 1588 (OED).[1]
Etymology
There are several theories about the origins of the word. By one theory, it is derived from MedievalFrenchlaquais, "foot soldier, footman, servant", ultimately from Turkishulak, literally "a messenger".[1] In Gaelic, it is a surname related to the word for stone, leac ---> lackey.