A bailiff is a manager, overseer or custodian – a legal officer to whom some degree of authority or jurisdiction is given. There are different kinds, and their offices and scope of duties vary.
Bailiff's notice on boarded-up premises, London, 2015
In Anglo-Saxon England, a reeve was an administrative official serving the king or a lesser lord in a variety of roles. After the Norman Conquest, it was an office held by a man of lower rank, appoint
Bailiff
…who also administers oaths to people who participate in court proceedings. Bailiff was the term used by the Normans for what the Saxons had called a reeve: the officer responsible for executing the decisions of a court. The duty of the bailiff would thus include serving summonses and orders, and executing…
Oswald the Reeve in "The Reeve's Tale" by Geoffrey Chaucer