Serjeant-at-Arms

Chambers's Encyclopaedia, Volume 9: Bound to Swansea, p. 322

Serjeant-at-Arms, in the English Court of Chancery, is the officer who attends upon the Lord Chancellor with the mace, and who executes by himself or deputies various writs of process directed to him in the course of a Chancery suit, such as apprehending parties who are pronounced to be in contempt of the court. A similar officer attends on each House of Parliament, and arrests any person ordered by the House to be arrested.

Source scan(s): p. 0335