The Collaborative International Dictionary of English v.0.48:

Headborough \Head"bor*ough\ Headborrow
\Head"bor*row\(h[e^]d"b[u^]r*[-o]), n.
   1. The chief of a frankpledge, tithing, or decennary,
      consisting of ten families; -- called also borsholder,
      boroughhead, boroughholder, and sometimes
      tithingman. See Borsholder. [Eng.] --Blackstone.
      [1913 Webster]

   2. (Modern Law) A petty constable. [Eng.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Borsholder \Bors"hold`er\, n. [OE. borsolder; prob. fr. AS.
   borg, gen. borges, pledge + ealdor elder. See Borrow, and
   Elder, a.] (Eng. Law)
   The head or chief of a tithing, or borough (see 2d
   Borough); the headborough; a parish constable. --Spelman.
   [1913 Webster]