E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A constable; a law officer whose business it was to apprehend criminals. Pole or poll means head, person; and the word means one
who catches persons by the poll or neck. This was done by means of an instrument something like a shepherds crook.
Cacchepoles, from catch and pole, because these officers lay hold of a mans neck.Wiclif: New Testament (Acts xvi., Glossary).