What is Beadle?

Legal Definition
Beadle, sometimes spelled "bedel", is an official of a church or synagogue who may usher, keep order, make reports, and assist in religious functions; or a minor official who carries out various civil, educational, or ceremonial duties.

The term has pre-Conquest origins in Old English, deriving from the Old English bydel ("herald, messenger from an authority, preacher"), itself deriving from beodan ("to proclaim", which has a modern descendant in the English verb bid). In Old English it was a title given to an Anglo-Saxon officer who summoned householders to council. It is also known in Medieval Latin as bedellus.
-- Wikipedia
Legal Definition
Eng. law. A messenger or apparitor of a court, who cites persons to appear to what is alleged against them, is so called.
-- Bouviers Law Dictionary
Legal Definition
In English ecclesiastical law. An inferior parish officer, who is chosen by the vestry, and whose business is to attend the vestry, to give notice of its meetings, to execute its orders, to attend upon inquests, and to assist the constables. Wharton.
-- Black's Law Dictionary
Legal Definition
A court crier; a parish officer whose duties resembled those of a constable.
-- Ballentine's Law Dictionary