The Collaborative International Dictionary of English v.0.48:

Ungeld \Un*geld"\, n. [Pref. un- not + geld payment.]
   (Anglo-Sax. Law)
   A person so far out of the protection of the law, that if he
   were murdered, no geld, or fine, should be paid, or
   composition made by him that killed him. --Cowell. Burrill.
   [1913 Webster]