Exactor
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In the civil law. A gatherer or receiver of money; a collector of taxes.
Cod. 10, 19.
In old English law
A collector of the publlc moneys; a tax gatherer. Thus, exactor regis was the name of the king's tax collector, who took up the taxes and other debts due the treasury.