Herdwerck
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
or HEORDWERCH. Customary uncertain services as herdsmen, shepherds, etc.
A. D. 1166, Reg. Ecc. Christi Cant. MS.; Cowell.