The Collaborative International Dictionary of English v.0.48:

Barton \Bar"ton\ (b[aum]r"t[u^]n), n. [AS. beret[=u]n courtyard,
   grange; bere barley + t[=u]n an inclosure.]
   1. The demesne lands of a manor; also, the manor itself.
      [Eng.] --Burton.
      [1913 Webster]

   2. A farmyard. [Eng.] --Southey.
      [1913 Webster]